Baby 3 months and 2 weeks old. When I feed her, I always turn her body…

Baby 3 months and 2 weeks old. When I feed her, I always turn her body towards me. That is, she lies on her side and falls asleep. But lately, she has been arching back and turning away and crying while looking for comfort. I help her a little by hand directing her head, takes the breast and turns back. It's in both directions like that. I change the breast and it still happens. She had a routine. At 8 they started preparing for sleep. Now she may not sleep until 12-1. She has a bit of stomach pain because I am treating her with female medicine. And there is an antibiotic in the composition of my candles. I give her a prebiotic