Could my period be late because of pregnancy??

Yesterday I was FREAKING out, literally crying every 10 minutes because I thought I was pregnant. Now that I’m calm I would love for some ladies opinions on why my period may be late or if I should worry.

Monday I was supposed to get my period, it is now Friday and my period is still a no show. Saturday and Sunday my boyfriend came over and fingered me both days (not trying to be nasty but I was thinking this could have delayed my period) the following day (Monday) I got my regular period symptoms like light cramps, increased appetite, and mood swings, I also got sore breasts but I rarely get that when I’m about to start my period so this worried me some. Wednesday night I started getting abdominal pains, now (Friday) I don’t have them anymore really.

I had unprotected sex for 5 mins on sept. 4th and between them and now I had protected sex twice. I’ve taken tests, my most recent one was yesterday morning and they all came back negative so I’m pretty positive my period is not late because of pregnancy. Does anyone maybe know why it could be late or what I should do if it doesn’t even come this month?? Does anything think the test could possibly be wrong?? Thank you so much for any help, it would ease my mind a lot more! Thanks.