TTC, implantation bleeding???

Had sexual intercourse at my most fertile (about 2 weeks ago) and am due for my period in a few days.

But just yesterday & today I experienced light cramps (which is unusual for myself before my period) and pinkish discharge for 1-2 days, but just now it went a bit heavier (still light bleeding) and red.

I was hoping it was implantation bleeding before but is it just my period now? :(

Thank you for any insight!