3 days delayed and I’m concerned

So I (22f) am 3 days behind from my estimated period time.

My bf and I have PIV sex 4-5 days after my fertile window. He didn’t ejaculate inside of me and to my knowledge I didn’t see or feel precum.

Typically my periods are super heavy. But my last period was light.

Then between last period and now, I’ve had a lot of stressors. I started a new job, money, depression, not eating as much, and so on. I just haven’t necessarily been normal this past month. I usually masturbate right before my period and it kinda gets it going. Well I haven’t done anything close to that like normal.

But I’ve definitely been having my usual PMS symptoms, greasy hair, acne, body pains, mood swings, headaches, cramping, etc. When I urinate I can see a little bit of discoloration drippage afterwards. Which is usually how I initially tell I’m bleeding. But it’s so faint I can’t see anything on toilet paper.

I’m currently 12 hours away from home in another state for my new jobs work training. So I’m constantly going to meetings and such. + we drove to the place I’m at right now.

I can’t for sure tell but I’m pretty sure I’ve stressed myself to the point of light periods or completely missing it.

Any feedback?