I just logged on to post about this!
I'm on the same page as you....it seemed to go away recently but is back and not due to diet, constipation, hydration or anything like that - just pelvic pressure and the general awfulness of late pregnancy.
Tips from my doula:
-Swabbing the area with a cotton ball soaked in witch hazel seems to help and is cooling, you can also put the witch hazel in the fridge or the soaked cotton balls. Also can add a little bit of lavender essential oil to the cotton ball for calming and anti-inflammatory, although I'm uncomfortable with a lot of essential oils on raw places, so I just do the witch hazel.
-You can also tuck the cotton balls in there and leave them for a while (you might want a panty liner for leakage.
-Massage them with vaseline or some sort of oil and then push them back in...I was with the doula on this one until the pushing them back in part. Does she mean push them straight in, so like pushing them into themselves? or does she mean pushing them into my butt?
I'm really not sure and uncomfortable with hemroids and about hemroids. Never even knew what they really were until last week.
-Carefully wiping or just using a peri bottle. I've also found that staying dry and airing out if possible helps.
If any body has any sure fire tips I'm all ears!