Lifestyle after core decompression.

I've been operated with core decompression with fibular grafting surgery on my left hip one and a half year back! I was suffering from avn stage 2. I've been smoking cigarettes and drinking alcohol since past six months. I've have realised that I should not supposed to be doing those and I quit!also I don't feel that avn pain per se but I have some discomfort in some of the hip movements and fell weakness in that leg.So my question is,is my lifestyle compromised for the rest of my life? And am I supposed to have sex? I've tried but I'm scared of certain position and wasn't able to perform. How do I make my situation better? Should I gonna lead a compromised life? Is this discomfort permanent? I'm very confused and scared please give me an elaborate answer.