Could I get pregnant?

Ok so I just had protected sex (with a condom) and I'm supposed to get my period in eight days. The guy said he did not come. But I am a very very anxious person -and once had an incident where the condom broke, the guy I was with came, and he said he didn't come and I got pregnant - so I have trust issues as well. This guy did not come and we wore a condom so I should be fine! But I still am so anxious. What I'm wondering is if I conceived just now, could I still get my period next week since it's so close? I'm worried because if there's a chance I happened to get pregnant it says the embryo implants just about seven days after and can cause spotting. What this occurred and I mistook it for my normal period? I know it's silly but it could happen right? Am I just being crazy? Ugh god I always get so anxious every time I have sex about possible repurcussions (even though I always use protection) that I can't even enjoy it sometimes :(