Light bleeding

My periods are never light. I had sex a little over 2 weeks ago. All 4 pregnancy test I’ve taken have been negative.

TMI BELOW

I use tampons and the ones I have used have barely had any blood in them. And it looks really light. I put on here that I started cause yesterday I used the restroom and there was very light pink blood on the toilet paper. I’m not cramping like my normal periods. I have also been sleeping a lot. I hope this is okay to post but I’m just worried, should I buy another test and test it again in a couple days?