3 month old

My (almost) three month old has currently been throwing up all day and not really eating. She doesn’t have a fever (98.9) And she has been crying in pain. She is NOT colic, and doesn’t ever really fuss/cry. She’s letting off some nasty gas, I gave her gripe water which seemed to work for now. She has pooped everyday this week which is unusual for her since she normally only poops every other day. I have her sleeping in her swing at the moment as it is the only thing to keep her calm. I don’t know what else I can do or give her? Also, her belly isn’t hard either. It feels normal, but she is bloated badly. I had to take her to the ER a month ago bc of her screaming for 3 days straight but they passed it off as colic after torturing her for 3 hours. (Literally took them 23 tries to get a catheter in her and they stuck her 8 times, I had finally had enough a made them stop and get me a nurse from the nursery). So they are no help at my hospital. I don’t know what else to do to take my baby girl’s pain away.