What are the effects of bulimia in pregnancy?

Not good. Bulimia and pregnancy are a very bad combination. You amplify the risks to yourself due to changes in your body from the pregnancy. In addition, you risk damage to your developing fetus. You could actually die if you don't stop practicing the bulimic behaviors. Your fetus could die and you could have a miscarriage. Your fetus could suffer from lots of problems later on in life. Please seek help.
Eating for Two. Eating disorders require medical and psychological counseling often with an update during pregnancy and breastfeeding because of conflicting thoughts that may impact adequate nutrition intake and body image or food disordered thinking. If nutrition is significantly compromised, then the baby may be runted.