My 2 months old daughter started crying every single time she has a bottle in her mouth. She turns red, smacks and kicks at the bottle, and just screams. She went from eating 4 oz bottles to just over 2 oz per feeding. I don't know what's wrong! She great and happy until she eats. Then that's over and she's happy go lucky again. Someone please have something to tell me that this will stop soon and she'll go back to normal. Oh and she is still gaining weight like she is supposed to so her amount of eating doesn't seem to matter at the moment. I just really want her to eat and not act like she's in pain...