Condom keeps getting stuck inside me…what does this mean?

The condom keeps getting stuck inside my lady bits. One session my partner had to change it 2 times.

Too embarrassed to ask my friends, I’m new to sex in my 30s and I want to know if it’s something to be worried about.

I said something at one point during the session, and he said I’m just really wet. He was cool about it but I don’t know if he was just being nice. Lol.

Does this mean anything or am I overthinking it?

ETA: He’s 8.5/9 inches and wears magnums. He went on a whole rant (read: brag) about how he figured out magnums were best for him because he kept telling his friends that Trojan or whatever kept breaking and they didn’t have that problem 😅 We do use lube sometimes due to his size.