I Hate Going To The Doctor

I really just don't like being sick but I think I'll have to soon enough. I'm not sick at the moment, just constantly out of energy. I've been trying to sleep better and all but my body constantly feels drained like I can collapse at any time. Another thing is that I've really lost my appetite, I can barely eat as much as I used to be able to. Today I had my first meal after I got back from the lab around 3pm and it wasn't much food but I really struggled just to eat it all and needed to drink a lot of water just to finish it. Tbh I kind of feel like life is leaving my body😅. If there are some supplements I could get that'd really help.