condom staying inside?

Brianna • I love going to concerts and raves! Life is all about new experiences and enjoying what God has offered us!☺️💕
I was having sex with a friend (we're fwb) and we were going at it pretty hard and what not. And after we were done he was pulling out (he had a condom on obvi) but it stayed in me while he pulled out. According to this app I'm in my fertile window or whatever, so I'm kinda scared I have a possibility of getting pregnant. 
Is it posible?😅