Possibility of pregnancy?

My last period started on July 3rd and ended on July 8th. I had sex without condoms on July 6th and July 28th. I'm on the pill but I don't take it at the same time everyday and I always missed my pill on July 12th and July 15th. Or cycle days 10 and 13. On the 6th we had sex twice and he pulled out both times and also the once on the 28th. The 28th it was more of a lot of fingering but we still had sex for a minute or two. I'm not very good at figuring out my fertile days but I'm pretty sure it would've been July 16th and 17th. I haven't tracked in a while so Glow isn't showing the fertile days yet. Also, after sex on the sixth I got a UTI and was put on antibiotics for 10 days which gave me a yeast infection. I had my urine tested about 5-6 days after the 6th, so it was probably too early to see if I was pregnant.

On July 28th I had light spotting (can't remember if it was before or after sex) and July 29th I had medium spotting. At first Glow said I was going to get my period on Sunday July 30th. Which I knew was wrong because I always wake up with my period on Tuesday morning. (Weird I know) so I deleted the cycle rather than saying I was late because I knew it wasn't going to happen anyway. So after I refreshed it, it said I was going to get my period Wednesday which I was like okay it's closer and if I get my period Tuesday I'll just adjust it. Well it's Tuesday night and I still haven't gotten my period yet. Could I be pregnant? I'm seriously so scared. I'm only 17 and I was on the pill so I didn't think anything would happen plus the withdrawal. Could my period be delayed because of the two missed days or the recent uptake in sex? Or maybe stress? Thank you!!!! I appreciate any advice 💕