Anxiety and Stress

Hi Guys! So I'm going to write this short and to the point. I get my period every month on the 8th, as well as this month. Except this month was a lighter blood flow which is different for me, but could be because of my anxiety. Today (17th) I took a pregnancy test, and it came back negative? Should I still be concerned? Or drop it... I have very bad stress! Let me know, thank you! 💛