I feel for you, I really do. I had SIX very sick months... TWO TRIMESTERS!!! of what you are describing with my first pg. When I would start to vomit, my whole body would would contract, all the muscles in my body were so sore. I would tell everyone that they call it morning sickness because it starts in the morning and lasts till you fall asleep at night. People said I was literally GREEN I was soooo sick and throwing up bile...eeewh. I was still in school and my husband who is also a fellow student would have to walk me from building to building, me holding on to his arm, eyes closed, stopping occasionally to throw up from the smells that overwhelmed me (like fertilizer, formaldehyde from the anatomy lab...) I was so sick with that pg that I developed a food aversion and until getting pregnant this time have had a very hard time deciding what I wanted to eat (even after I was pregnant)
Here are the things that seemed to help me other than the usual advice to eat more often (which stems from the idea that m/s is caused by low blood sugar... which I thought was complete stupidity because it didn't really help me except to help me gain about 70 lbs during my pg!!!... there was more to my m/s than low blood sugar)
GINGER - you can cut up fresh ginger and put a slice in your mouth (hot, hot) or make a tea with hot water, or even (my favorite) make a little tincture by putting some in a blender with a clear alcohol like vodka or everclear... make it strong so that there is lots of pulp in it. then put it in a baby jar (the pulp should be just under the liquid) or let it sit a couple of days or a week then strain it and put it in a glass bottle with a dropper. What is nice about the tincture is that it is portable and you can pop it in your bag if you are on the go. You can add a dropperful to a glass of water or just put a few drops under your tongue to help settle your stomach. You can do the same with the pulpy tincture but you may find that the pulp gets stuck on the back of your throat and may make you gag if you don't have something to wash it down with .
PEPPERMINT - tea or even better, essential oil. Smells were one of my worst m/s inducers so I bought a personal aromatherapy diffuser necklace. You can find them online at several websites that sell essential oils. It is a necklace with a little glass vial that you stuff with cotton from a cotton ball and you put a drop of essential oil on the cotton. The heat from your body warms the metal surrounding the glass vial and gently diffuses the oil. Peppermint is by no means my favorite scent but it works wonders at relieving nausea instantly. Long term not so good but there were time when I would put a drop on my palm and rub my hands together and put them over my nose. (I know that you aren't supposed to make direct contact with essential oils without a carrier oil but I did what I had to)
LIMIT AMOUNT OF LIQUID - yes, make sure you are getting plenty of liquids because you are pregnant. I don't mean to decrease your intake. What I mean is that when there is a lot of liquid in your stomach it sloshes around and can make you sick. Try not drinking anything when you eat. and only take a sip every few minutes when you do.
PROTEIN - I know you have no appetite, but make sure you are getting enough protein. Sometimes that was all I needed.
NEROLI HYDROSOL - hydrosols are the water byproduct of the essential oil distillation process. Neroli is specifically for anti-anxiety which I'm sure you are starting to get every time you feel like you are going to throw up. (because if it's like it was for me, vomiting does NOT make you feel better). Not to mention that neroli smells absolutely heavenly. It's like, I can't describe it but I'm sure it will help. It's like getting an extra second or two of bliss... it smells so good that you just get caught up in it. I didn't get to use this for m/s but I did in labor... actually when I asked for it, everyone spritzed some on their faces as well. There is a website that explains all the different uses of the different hydrosols and also sells them. Don't remember what the site is (think it was like naturesgift or something) but you'll have no problems finding it if you look up "hydrosols" on Google.
CRANIAL-SACRAL THERAPY - I highly recommend you look for someone trained by the Upledger Institute who has all three levels of certification. CS therapy has to do with releasing tension on the dura (sheath) of the spinal cord and fascia (coverings) of the muscles. Without going into too much detail as I am prone to do

, CS was the ONLY THING THAT HAD A
LONG TERM EFFECT on my m/s. My first session was a hour and a half. Going in I literallly had black and green circles under my eyes and my complexion was on the green side. After 1 1/2 hours of the therapist working on me and 1/2 hour of rest with lots of water afterwards and some fruit and almonds, I FELT AWESOME. My color was back, my circles were gone. The next day I woke up with only about 15% of the sick feeling I had had for the past 5 months. I had a couple more sessions with someone else (in my area) and continued to get better so that by the middle of my sixth month I wasn't sick anymore. Of course I would get nauseaous if my blood sugar was low but it was nothing compared to before.
Hope this helps some... Like I said I really feel for you.

just needed to add that with the essential oil and hydrosols make sure you buy organic. The distillation process is actually a concentrating process and you don't want concentrated chemicals around you when your are pregnant.