Please help

Hi, I will try to make this as short as possible. Last month and beginning of this month I had unprotected sex 2 or 3 times (he pulled out on time) and that weren’t my fertile days. (I’m tracking my ovulation and fertile days every month) My boyfriend and I usually use condom but this time we didn’t have it, we were on vacation. I am 100% aware it’s not safe and don’t plan on doing this again.

Anyway, I have long cycle (33 days) and I was supposed to get my period 10th January. It didn’t come... That’s not very strange since my period is ALWAYS late but i got very scared when it got 10 days late.

I didn’t experience ANY pregnancy SYMPTOM until 3 days ago I started spotting. First it was only spotting but then it started to look like light period, I needed a pad.

Yesterday I did home pregnancy test and it was negative (totally negative). Do you think this is okay and my period is light and late due stress or I can still be pregnant?

Past weeks very were stressful for me so it might be the reason...

Sorry for long post and please help if you can ❤️