Bleeding again after period ended...

Oki, so last month my partner and I started TTC. I got my period (boooo!) and it finished on Sunday. Today I’ve wiped and there’s a light pink on the paper! Like the start of AF!

I had a few cramps last night which I thought was just gas...I’m not on any birth control and haven’t been for 9 years, I have very normal regular periods and I’ve never experienced any bleeding between periods - so this is highly unusual for me! I’m kinda freaking out...help!!!!!