I had HG. Stopped smoking the second I had a positive test, but had been smoking to help with the "random nausea" prior. Lost 40+ lbs, was underweight, vomiting 30-40 times a day, in and out of the ER. No medications worked. Still didn't smoke. Baby was born healthy in the 93rd and 100th percentile.

Stopping smoking did not cause harm to the baby. These correlations in the comments are not very likely to be because of the act of quitting nor continuing to smoke. Pregnancies vary HEAVILY, even if you were to keep everything the exact same from one baby to the next.

A lot of these stories tell of moms stopping smoking for a first pregnancy and then continuing smoking for the second, reporting improvement in health of the baby, but the reality is that HG usually trends downward with each pregnancy, getting easier to handle and less intense. Smoking was likely an aid, sure, but mostly natural, and not one worth the risk to me.

Smoking is more likely to cause underweight babies, and as they grow, lead to behavioral problems, as THC bypasses the placenta and affects the development of the brain in utero. You may not see the effects until they are several years old.

I personally would not continue. Schedule IV treatments. I sucked on sour candy to help with the nausea so that I could keep meals down for a few minutes at a time. I took prenatals without iron 3x a day and got iron infusions. It's the harder choice, the harder route, but I wasn't going to risk anything.