I need some advice

Long story short October 5th I had my menstrual cycle my cycle length are 28 days I had ovulated October 17th on cycle day 13 so today is cycle 28th I should be starting my menstrual cycle today but I didn't couple of days ago after I had sex I had spotted I had stopped 5 minutes after that yesterday when I had sex I had spotted but then I had stopped today I should be expecting my menstrual cycle but I did not come on my menstrual cycle we had sex for about two weeks straight if I don't come on my menstrual cycle tonight I will be taking a pregnancy test tomorrow what do you ladies think that it could be normally I have pimples normally I have cramping in my private area lol but I'm not experiencing none of that I took two pregnancy tests but they're very faint can't really take a picture cuz you can't really see it unless your face to face looking at it lol