Gastro issues

[Sounds]

So in December 21st I got what I thought was a gastro bug (my 4th one of the year) but it has been lasting a really long time. I had d for 10 days and then had a relapse of d a week later for a couple of days. I have felt really nauseous and tired the whole time and haven't wanted to eat. I have lost about 20 lbs. And I still have bouts of nausea and stomach upset and fatigue. I did a stool sample and there were white blood cells in there and crystals that indicate that it could be a parasite. My doctor has ordered another two stool samples but I'm feeling like I just want this to be over. I'm now off gluten and dairy as well as coffee and alcohol. I'm taking supplements and eating healthy foods. I wonder if my anxiety is creeping in and making things worse even though I don't feel super anxious. I just want answers and want to feel better. Has anyone else experienced anything similar? I wonder if it is immune related too since I have had so much illness in the last year? Thank you for your help!