Still feeling out of it after smoking weed

Hi so I smoked for the first time yesterday, I had a few puffs on a joint and quite a few bong hits I started tripping really bad for a few hours, general stuff However, today I'm feeling alittle out of it, I didn't get much sleep so that might get it, been getting maybe 4-6 hours a night and last night I got 3 because I couldn't sleep My metabolism has sped up (I don't know how) but Im having trouble concentrating I'm usually a dreamy person but anyway I've read about the effects of THC in the body and so I just was wondering how long this is supposed to last? I'm feeling alittle sick needing if I'm going to be like many people inhere who have seen effects months and even years in the future since I start university in 2 months Please help