I don't know what else to do😢

My daughter was born September 23, and I breastfeed her for 2 1/2 months with some supplementing with organic soy formula(I was extremely lactose intolerant as a infant,don't know if she is too or not) and she did great on it except for getting constipated a lot. After I weaned her and myself off of breastfeeding we had her on the soy for a little bit after but changed her to emfamil gentlease just to see if that would stop the constipation, which it did but it made her super gassy, her doctor assured me that it was normal at her age at the time and it would pass. At her 4 month shots I brought up how gassy she still was and how she won't sleep longer then 30 minutes at a time no matter what I do( burp her, bicycle legs, tummy rubs, bath time, gas drops, gripe water, tummy time) nothing helped her sleep longer, so she suggested I switched her to a newborn formula a week after her shots. 7 days after her shots I switched the formula to the newborn, that day she had diarrhea non stop which I called her doctor right away and they saw her two days later and said it's the stomach flu and it will go a away in a week. It didn't go away,so I took her to a different doctor to get a second opinion which he had us put her on a hypoallergenic formula ( which kinda helped but she still would have days with diarrhea) and the doctor had us go see a pediatric gastro 5 hours away. The pediatric gastro ordered stool samples and told us to go back on to the emfamil gentlease or a soy. The first night back on the emfamil was ok not great, the second night she would sleep for only 20 minutes at a time unless she was sleeping on my chest and she was sooo gassy again. So I did some searching and found gerber has a formula for gassy baby's so I went and got a tub of it hoping to god that it would work. Nope first bottle (2oz) she only ate 1oz and puked it right back up, so we waited an hour and tried again and all she did was gag and puke it back up so back to the emfamil gentlease. I'm so exhausted, stressed and at a complete loss on what to do and what to try. She's exhausted to that she is getting bags under her eyes and is crabby cause she's so tired but can't get a restful sleep. Any ideas? Any thing at all I'm willing to try anything just to help her get some sleep and my self.