My mom never threw up and says she never had nausea with her 4 pregnancies. I had mild nausea with 2 m/cs and HG with my current pregnancy. I have never had noticeable PMS symptoms, and I have the textbook 28-day cycle - My mom is the same way. My body looks like my moms. We are allergic to the same meds. I really thought that my pregnancies would be very similar to hers, but I was wrong.
I hate throwing up, and there were times when I felt like the world would end if I threw up one more time, but afterwards, it was never as bad as I thought it would be. I wasn't comfortable taking meds, so I used hypnotherapy and prayer to try to keep food down. Acupuncture also helped me. When I was too tired to keep that up, I used Zofran and Reglan. When I took the meds before the first time I threw up for the day (e.g., flying, being in a wedding), they totally kept me from throwing up. I would do counseling and hypnotherapy (it's learning to relax deeply and using your mind to control your body) before you TTC to deal with your fears. Even if you get morning sickness or HG, there is hope. Natural remedies work for so many mamas, and if they don't work for you, the meds can work really well. This may sound crazy, but I am thankful for the HG. The m/cs were really hard and made DH and I distant from each other. Somehow the HG brought us together and was healing for our marriage.