What’s going on with me? I’m 18 I don’t knoe if this is the aftermath of being stress or? I’m scared?

I have body aches they get more strong at night my skin slight burns, when I walk I get weak I can’t feel my feet or legs I have to speed walk to feel my feet/ legs a little, my legs actually give out but I still push myself to stand up I get a little pressure in my head on my body, I feel everything is moving around me when I stand up I fight myself but if I stand up too long I have to run to lay down, i feel like im not connected to my body, I feel I’m in a dream the rooms get dark when I stand up, I feel the room is turned around sometimes, blurry vision slightly, seeing pink/purple/blue spots but I’m always on my cell phone I sneeze here & there but nothing really, shortness of breathe I had with dizziness &hives kept wanting to come on before I got like this. I was and still been under stress & have a few anxiety attacks I’m always scared I have lupus or cancer since I have the symptoms of both like the petechiae, itchy burn rash on chest, lymph node, racing heart, sensitive to light, nausea, bloated on one side is my stomach many more symptoms I am right now bloated on one side of my stomach and have like a muscle pain and the one side looks a little bigger. My period is due in 7 days, I took iron pill yesterday, I been going to the bathroom good. I have flu symptoms but no fever, sore throat, runny nose, or cough but when I blow my nose some blood & green/greenish mucus I had pressure in my head & felt I was on the bloated but that subsided but I feel I sway at times