I had pretty severe nausea, but not actual HG (not extreme vomiting, just regular vomiting of stomach acid every. single. morning. and continual nausea constantly all day every day for the entire 40 weeks... to the point I just wanted to curl on the sofa and sleep through the pregnancy... taking a shower was awful even.)
Zofran helped me. It didn't "fix" it, but it helped me be functional. I also went and stayed with my parents for a few weeks during the worst of it, so my 2 year old didn't burn the house down around us both.
Good luck.
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Oh, I also had excessive salivation. My pillow would be soaked by morning and just trying to fall asleep was horrible, because of the constant need to swallow (or spit). Eventually, I sort of gave up and just put a fresh towel on my pillow before bed and let whatever drooled out drool out. To help me fall asleep, I actually sucked on lemon drops AS I went to sleep. I'd wake up in the middle of the night with a half dissolved one in my cheek. But it helped me deal with the salivation and be able to fall asleep. I worked really hard to keep my teeth clean otherwise, but I still ended up losing some enamel due to the daily acid vomiting sessions. My dentist (a new one for me at that time) asked me if I'd ever had an eating disorder due to the enamel damage from the vomiting of 2 pregnancies where I vomited every single morning throughout the entire pregnancy... 41 1/2 weeks long with the first, 39 with the 2nd. Of course, it didn't start until about week 4 or 5... but it didn't let up until delivery.
Try sucking on lemon drops. I ate a lot of cheetos, too. Super healthy, I know. But constant eating was a necessity to keep the "taste" out of my mouth and deal with the saliva. Banana icees also were a Godsend.. when I could find them. I had to stay away from ALL caffeine, too, b/c I could taste it. Even in chocolate. Thank goodness I wasn't yet a coffee drinker.
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Sorry to keep adding.
But wanted to add that I have one boy and one girl and the sex of the baby didn't seem to have anything to do with it. The only difference with #2 was that I couldn't baby myself as much b/c I had to deal with #1 while I was pregnant with her. I was working with #1, so that was a bit of a distraction, but I was SAHM by #2, and the distraction of a toddler is not the same as the distraction of office work or adult needs/conversations. So that was hard. The sofa always being RIGHT. THERE. When it was all I wanted. For some weeks, I just wanted the bed with the curtains drawn and to sleep. Husband made me cheese toast in the oven. He was great. But he couldn't stay home with me the whole pregnancy to take care of me. We did ship our son off to stay with grands for a week, and then I went with him to my parents' as well. After about 24-26 weeks, it either got a little better, or I got used to it. Not sure which. I weaned off of the zofran and just made do.