Sex feels...too good?

Sorry about the silly question but I was just wondering if anyone has had penetrative vaginal sex that feels so good that you can’t take it and have to make your partner stop but you also can’t orgasm? I’ve never been able to orgasm from sex alone but lately (6 months postpartum) when we have sex it feels so amazing that I have to make my partner stop but I cant orgasm. I would’ve thought that if it was that good I’d orgasm but nope 😩 any thoughts?😩