smoked some pot and feel different few days after

hi im 19 and recently i smoked some pot with my friend at his house.  I have smoked pot before but this is only the 4th time iv ever smoked and trust me i will never do it again.  He told me it was some good quality pot and that it was called bangers which i guess is like high mid pot.  So he rolled a joint for both of us an we each smoked half of it an he said i smoked prob like 1 gram cuz he said he had roughly 2 grams.  I def got high off it and was prob the most high id ever been.  I got a little parinoid at first but after a while i started to feel chill and that was the end of it and then i went home.  But ever since i got home i was really parinoid of sh*t and was afraid i was like still high or something in his house an that this was all a dream.  I recently just got over that though realized that that's total BS and now i think i might be over thinking sh*t.  But like today and yesterday i started feeling like different mentally somehow.  Not like i was high or anything just kinda different and sometimes my head feels a little heavy and im scared that this effect or whatever you wanna call it will last forever.  I just wanna be my normal self again and im worried this could ruin my life.