Hello, I've Been Feeling Out Of It Since January, It

Hello, I've been feeling out of it since January, it started off with some type of weird feeling in my head, something like brain fog, then my throat was feeling like I have something stuck in it now just the other day as I was laying down & a shocking/tingling feel went thru my chest,l. I've had blood work done, a cat scan, ekg & xrays and everything came back OK. . .I just want answers because I'm stressed out not knowing what's wrong with me. . .what can it be?????