Am i going to heaven?

I grew up baptist and went to church every Sunday and Wednesday. I definitely accepted christ and I am baptized. My relationship with god was amazing. I remember exactly what that * fire * for him felt like. But its been so long since I've felt it. I've been living in sin. Premarital with my sons father. ( we live together ) I haven't been interested in going to church and it just hasn't been the same. I hate to admit it but being w my fiance has played a huge part in it. Of course I kno it was my decision but and its not like he brainwashed me. He accepted me for who I was but little by little I slipped away. I want that back. I haven't felt complete in who knows how long. Everyday I think about judgment day or about the time I meet god at the gates. What do I say? I know I can repent but I can't stop. How do i just wake up one morning and say " hey babe remember how i said i want to get married before well that starts now" even if i explained y he doesnt get it. Nothing would make me happier than my fiance accepting christ. I breakdown into tears knowing he could go to hell. I love him. Not to mention it would be so much easier for me. Maybe he would understand a little more. But my main question is what would happen if I died before things were right? Would god accept me even though I keep doing the same stuff I've tried to repent about? Or would I go to hell. I know I need to make my relationship with god stronger asap. I just neeed to figure out where to start I'm a mess. Please serious answers only. This is coming from the bottom of my heart. And please don't try to change my mind about what I believe in I'm 100 committed to only jesus christ.