2nd baby girl ♡

Am I the only one having this problem my daughter will be 3 weeks tomorrow & idk if it's what I been eating since I breastfeed that hurt her stomach I just need some advice from women who know alot about breastfeeding cause I'm new to it really ... 1. She keeps getting choked on mucus and it scares me cause she stops breathing so I use the little suction to get it out and 2. She has been using the bathroom but keep turning red what do I do about gas ??