Is it possible???

Last month I got my period on the 3rd, it was about 3 days late and I took a pregnancy test a few days before my period and it was negative. I haven’t been sexually active since before my last period. Today, I’ve been cramping from about 8 this morning, it is now 10:45 am. I went to use the restroom and on the toilet paper it look a little pink but it was very very hard to tell or maybe it was the reflection from my maroon shirt but there’s not way it’s possible right???

(I took midol for the cramps and currently trying to eat since my food intake has been off. Hopefully that’s the reason)