Fighting after Sex

So, Im not proud but I feel like I can't help but to get extremely annoyed and I can feel this crappy feeling comes across my whole being, when my S.O. "finishes" extremely quick making it impossible for me to finish. We are going on 6 "sessions" that this has happened now, in a row and I am going to go insane if it happens again. For me I feel like being intimate is a great way for us to "connect" after a long day and when this happens it ends up ruining the day and causing a fignt. Ugh. Am I alone in this or just a drama queen? 🙄