POTs caused by undiagnosed celiacs

So I got diagnosed with POTs due to COVID after a TTT back in September. I recently had a huge flare up and went to the ER after almost a week of diarrhea (I thought I had noro) and thankfully went because my potassium was very low and after testing to make sure it wasn't my gallbladder they referred me to the GI specialist. Well today I saw them and they want to test for celiacs disease and honestly it makes since in my case after looking up Celiac's disease symptoms. If I'm having gi issues of any kind my pots symptoms are out of control and even my beta blockers struggle to keep my heart under 130 when active. When I got to the bathroom I normally do have a heart rate spike during it and then again while turning my body to wipe. Which if my bowels are inflamed makes sense my heart would struggle. I've been gluten less since reading that cutting out gluten and large meals are triggering for POTs. Today after the doctor told me to eat gluten before getting the blood test done because eating gluten free can mess up the test results, I ate a lot of gluten foods. I feel horrible and my heart is fucking hating it. I'm scared of what my morning shit is going be like on my heart because when I have the diarrhea flares my heart rate spikes into the 130s sometimes. Anyways has anyone else been diagnosed with Celiac's and POTs?

Idk honestly just wanted to vent and ask. Just really hating the specialist train we have to go on to get to the bottom of everything. Just want my heart and GI issues to be under control so I can attempt to live a somewhat okay life. Idk. 😐