I can't really say if you are pregnant or not. But not seeing your period is not enough to conclude if you are pregnant or not. Though, it is good you detect the date difference early which many ladies ordinarily don't take note of. The protection you made mention of cannot give you 100% prevention of pregnancy, because research have proven that condom is never reliable any more. Because of several failure cases and technical know how of insertion. Also,you mentioned the issue of him not ejaculating. Well,I doubt if you can vividly conclude about that, because the mood ordinarily can make you not reason or detect it.
I'll strongly advice you wait for the next 7 days. If after the 7days and the thing didn't show. Then get 3 PT strip and use each in the morning with rearly morning pee or uurine. If it shows positive, with two desperate lines then you're pregnant. And then go on with medical or laboratory test to be sure.