I just started birth control at the end of august to manage endo. however it causes me to bloat a lo, especially after eating, how can i prevent this?

Try it at night: I would consider taking the pill before you go to bed at night. There is less bloating at night. If you continue to have the problem after you have been on the pill for at least three months, you might consider switching to a different pill. There are lots of different pills and you might find one that you like better! Best wishes!