I keep thinking I have a horrible illness... my left knee is kinda doing this weird nerve thing. It turns kool and then numb. It seems like nerve issues. I obviously am thinking the worst possible thing like MS/ALS/tumour etc. 

I could think about it more logically and maybe blame the fact that I’ve been running a lot 3x a week and have been taking the stairs (17 floors) this week. I just can’t shake it and think the fking worst. I honestly hate it, this irrational psychotic fear. I just want to cry. 

I’m not sure if I’ve pinched a sciatic nerve or something?? Or am I fkin dying?? I am just so paranoid... please help 😢