I need some help/advice

So my boyfriend and I just started having sex in May. It was the first time for both of us. It’s good sex. We are trying different kinks and positions. But I don’t know if I’ve ever finished or have been close to finishing. I love that I can get him to finish and feel nice and don’t get me wrong I feel nice after as well. I just want to figure out if I’ve ever finished or have been close.

I know this is probably stupid and it’s one of those “you should know this” type stuff but I can’t talk or ask anyone else about this.