Disappearing cum?

I had sex on the 17th with protection. On the second round after he busted he looked at the condom and said it broke. I rushed to the bathroom and nothing was dripping and I stuck my finger up there and nothing was there but a little discharge. I filled the condom up with water and nothing leaked. I asked him why the condom broke and he said because he didn’t see any cum.. but then he said “ but I remember if I bust 2 or 3 times after that, when I bust, I don’t have a lot of cum come out” lately my stomach has been a little bubbly and I’ve been overthinking and stressing myself out. I thought maybe what if all the cum went into the base of the condom instead of that little bubble at the end and leaked out? But then again he said he didn’t see any cum at all.. could I be pregnant?