Confused??? What do i do?

Me & my boyfriend have been together for 6 almost 7 years. We have always had a rocky relationship but always managed to work thru our problems. About 2 years ago we moved into our first apartment together & i was soooo excited & happy to finally be on our own. Well apparently while i was at work he was having sex with my brothers ex girlfriend who is also the mother of my niece & nephew!!! I was sooo devastated & hurt i didn't know what to do with myself! I made him go stay at his moms house for a few days so i could have my space & think about what it was i wanted to do. I was soo confused because even tho i love him i was really hurt & didn't know if i would ever be able to move on & forgive him for what he did. Well i wound up forgiving him & letting him come back home. We were doing good for a couple of months he was trying really hard to work on our relationship & earn my trust back & then i got pregnant. I am now 37w6d with our first baby. But now we are back to constantly arguing & fighting. The other day we got into a big fight & he said some really nasty mean things to me. One of things he said was that he loves me but isn't in love with me anymore & it broke my heart. I basically told him that since he isn't in love with me anymore then i should move out because what is the point of staying when he doesn't love me anymore. The next day i called my grandmother & told her i wanted to go live with her because i don't have anywhere else to go & im about to have this baby any day now...I started to pack my things but it will take a week or 2 before my grandmother to come get me because she lives in virginia & i live in new jersey. When he came home & seen i started to pack my things he got mad & told me he wants me to stay...which really confused me. If he doesn't love me anymore why does he want me to stay??? Im sooo confused & don't know what to do. I need to figure this out before i have this baby.