Help me!

Lorena

So I had my period on the 23rd of last month and it lasted 3 days. Lately my period has been super irregular. But today I started spotting and got a little darker. But not like period blood. It was like a bright. Idk how to explain it. But I have also been experiencing some cramps and my back was killing me this morning. I do have pcos. Should I test soon? Or is it just another irregular period? I’m stressing out.