Two weeks late; unprotected sex multiple times over the last

I was with my boyfriend a couple of days after the last day of my period. And again, two more times, 8 days after the last day of my period, and again about 14 days after the last day. We also had sex a few times recently, about the time my period was supposed to start again.
Twice the condom slipped in a very awkward manner.
Once, there was a small hole in the condom and it ripped.
We also had unprotected sex on purpose, and use withdrawal.


I'm going on two weeks late for what my period should've been, but it's never been reliable.
For the last week, I've been nauseous with headaches and premenstrual like cramps. It feels like my period is going to start, but it doesn't.
I get sharp pains in my pelvis and just below my ribs on the right side.
I get sharp pains that go through my breasts, from the nipple and back to the bone. They're also pretty sore almost all day.
I'm horribly exhausted, having to stop for a nap in the middle of the day, or feeling the need to go back to bed after waking up.


I'm not too worried about it, because I feel that I can take responsibility, but I was wondering if I'm stressing over nothing?
I haven't ruled out that it's my mind playing with me either.

I'm going to take a pregnancy test in a couple of days.