I came in my girlfriend twice last night and she's on the third week of the second month of her birth control. Is it likely she could get pregnant?

As long as she has been taking her birth control properly, no, it's not very likely at all.

Here's a birth control effectiveness chart just to give you an idea of what you're working with. You should likely be fine even if you do ejaculate inside her.

I think you're going to be ok, although I would have waited a little longer before I started barebacking.

I started having unprotected sex a week after starting birth control and I've never had a pregnancy scare. You should be fine.

I'm not going to lie. It's ALWAYS possible for her to get pregnant, even though she's on birth control - assuming she takes it on time every time, there isn't much of a likelihood that she would get pregnant, but you are ALWAYS taking the risk.
I wouldn't worry about it until she starts exhibiting symptoms of pregnancy, but I would definitely take more precautions for a while.

The chances of her getting pregnant are very low. Although, like Emily mentioned, it's possible. But honestly, I wouldn't worry about it. It's not likely that she's pregnant.

As long as she's taking her birth control correctly, there's not a very high chance of pregnancy. I've been taking the pill for a few months & been having sex without a condom, & there's been no pregnancy scares, although it's best to use a condom.

As others have said, provided she's using it correctly the odds are low; however, there is still a chance when not using one of the barrier methods (e.g. condom) and as always being cautious is the better option when it comes to contraceptives. Prevention is better than cure as they say.