Will jesus forgive my terrible sins?

Two years ago i was confused about God. This was when i was year 7. I was so confused i started worshipping satan for a while. I had 666 and the antichrist on my hand. I feel terrible about this now as i realised my mistake and i am now a firm believer in God. I feel so bad i cry at night sometimes im year 9 and i thought me having appendacitis and having surgery was punishment but please will Jesus forgive me? Please dont toy with me i cant sleep as this is on my mind. I really want to know...does Jesus love me? I heard he loves everyone but i have sinned so badly.