I throw up sometimes, when I’ve eaten something too fast or when something just doesn’t agree with me. I’m 8 weeks post op and this has probably happened about 5 times. Only one of those times was the vomiting urgent/involuntary. The other times it was just clear to me that I was going to be very unhappy until whatever it was came back up, so I made myself throw up.
Vomiting is not as bad an experience post-op as it was pre-op, at least not for me. It’s quick and painless, and because you have so little stomach acid it doesn’t burn.
I’ve read about people having trouble with their teeth after RNY but it’s not really teeth - it’s bone loss in the gums that can make teeth loosen and sometimes fall out. That’s why taking your calcium is so important after surgery. Some people on other forums recommend getting a dexa scan to measure your bone density before surgery, then repeating it once a year. This is because it’s hard to test calcium levels with blood tests - your body needs a certain level of calcium in your blood to survive and will pull it from your bones if you aren’t absorbing enough from your dietary/vitamin intake. Dexa scans can show if you’re losing bone density due to insufficient calcium.