Second time

Okay so I had "sex" (if you even want to call it that) in the summer around August. The problem was he really big and it HURT so he only got about half way in before I was like just forget it. After I went to pee and was bleeding a little, which I knew was normal. I want to sleep with my current boyfriend now but I'm really scared! I want to use lube because I'm so scared but I feel like that's embarrassing. This would only be my second time and I'm scared it'll hurt like the first time & I won't be able to enjoy it. Do you guys have any tips or advise for making it not hurt as much ? Thanks!