Pregnant or ?

Sheena

I’ve been late for 15 days, and this is cycle day 44. My periods have always been normal ? Anyway, I had unprotected sex Aug 6 and around the 9th , the other times after I used spermicide. After a week of a missed period on day 7 I took a hpt and it came negative and on day 10-11 it was negative again. I did one today and it was NEGATIVE. Idk if my period is about to come or not, Bc recently I’ve been having lower back pains more than normal and now my nipples are getting more sore but my nipples are not getting darker like how most “pregnancy” symptoms are. I’ve been peeing more often also , I just think it’s just a bladder infection , I just can’t see myself pregnant for some reason. But pls let me know what I can do ? If I’m pregnant, why am I getting bfn ? Also , idk if this is important but the first day of my last period was July 29 and ended around the 2nd and <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> says I started ovulation on the 7th.