Could she be pregnant?

So me and my GF were having sex, and we used a condom, it fit well and we put it on properly. I continuously checked to make sure it was in the right place, and it was.

The problem is after I came in it, I pulled it out and it seemed like it was kinda sticky at the tip, she was kinda dry, but there was some stuff at the tip, and maybe some near the base. This freaked us out, so we went to the sink and filled it up with water, and thoroughly checked for leaks, but it was fine, and the condom seemed to catch everything at the end like it was supposed to. What are the chances that the sticky stuff was semen? She is also not fertile at the moment so that's a good thing, but what are the chances that she could be pregnant? I'm just so worried!!!