Did you do better in your gcses then you expected?

I'm near my gcses and i'm really worried, i knew that i screwed up both my sciences which has narrowed my exams, P.E i'm not going to p because, im sure. And electronics which is really complicated i think i might fail. Things i could get is media, business, product, i have this alan exam which i got a c for[full gcse], and 2 englishes, i dont know if i can p electronics, all these subjects i am on a c/d and i could possibly get c's. It's because the college i went to didn't teach and warn us how important cw etc was and also we were put in sets for what we were predicted to get in sats, so they tought us like we were not going to achieve much, i am naturally smart, i did really good but in this college i got confused with my electronics because i didn't ask a lot and i wasn't taught alot, will i do better then i think? or fail miserably, for mock i got 1 or 2 c's and majority d's, i didn't revise that well. I'm worried that if i don't get 5 gcses i can't go sixth form which i really want to do.