Hiya... been a while.

The fiance and I have been trying, but not trying y'know? Money-wise and job-wise is kinda causing us to not really try hard. However, this month, I am 17 days late. I have taken two tests. The first one was 1 week late - Negative. The second one was last week sometime - and negative.
The previous night (Tuesday), we had sex, no condom of course... and he did a marginal cum in me and the rest pulled out. I'm pretty sure that has triggered it, but I still don't have my period. Should I wait until the end of the month to see if I've gotten it then go to the doctor? Anything I can check besides the tests to see if I am pregnant?
Thanks all