4 years ago i had roux n y gastric bypass. i am 23 years old ttc. what would this surgery have for effects on pregnancy?

Depends: It should n't be much assuming your are consuming adequate nutrients. Having the bypass, more than likely is helping to regulate your cycles and should enhance your chances for conception.

Pregnancy: You need to take prenatal vitamins on top of the vitamins you take for your gastric bypass surgery. You should have your vitamin and protein levels checked a few times during your pregnancy to make sure they are normal. Other than that, you should be fine.