Sound Familiar?

Okay all of you reflux moms, I need your help. To make a long story short, we are still battling all of this with Claire. You know from my post a few weeks ago that they put Claire on 3 or 4 meds after all of her tests at childrens. I do see that her reflux is a little bit better because she does not scream during feedings as much and is pretty happy for an hour after the feeding. BUT...she is still having major GI issues. She is not able to sleep more than 30 minutes at a time for naps or night. We know about the "45 minute intruder" and trust me, this is not it. This is ALL NIGHT LONG. She hasn't slept in months, but it's just getting worse. She will go 1 hour to 1 hour and 1/2 at most and that is on a good night. She just is so uncomfortable, clawing at the sheets, grunting, pulling her stomach in, etc. And it doesn't seem to be gas at all because we know what that used to be like. It is just something happening when her food hits the digestive track. She has been constipated for weeks now and goes every couple of days even with miralax. And sorry for TMI, but I just need advice. It's always green. We thought the nutramigen was the answer since it helped with fussiness and gas, but it is still not doing the trick once it hits an hour after the feeding. SOOOO... does ANYONE have any similar experience with this? Some sweet girls from my community group at church seemed to think since the reflux was getting better, it was probably an allergy. BUT we cannot have an allergy test this early. Is there any other formula that would be better than nutramigen or the similac version alimentum? We are just wondering if anyone has any experience and maybe could enlighten us. We are at 4 1/2 months and it is so sad to watch her in pain so much and I'm really losing it with no sleep trying to take care of two kiddos! Poor Chris doesn't even know me at the moment! So I just thought I would throw it out to the blog world because surely somebody has either heard of this or been through it. In the meantime, please help us pray that God would heal this (of course in His timing and not mine:) and pray that we can stop the meds, the search for the perfect formula, and remember what getting sleep feels like! :) Thanks for all the prayers so far! Keep them up! We do go back March 1st to the GI and the next step will be to do an endoscopy where they put Claire to sleep to put a tube down her, and we would also spend the night at children's while they run test all night and watch her sleep, toss and turn. So any advice?