Pregnant?

Okay so little TMI but my boyfriend and I have been together for 4 almost 5 years and every time we have sex he just finishes in me, and that’s been like over 3 years of him doing so. Every single time for cleanup, his stuff comes right out of me onto the wipe or tissue we use. But last night..nothing came out. Does that mean it’s already on its way to my egg or what does it mean? Could I become pregnant bc it didn’t come out? Someone pls help!