PLEASE HELP 🙁

Hi ladies, need help! So Sunday was my last menstrual period day. Monday I took an ovulation test and showed low fertility (just for no reason). Monday I had brownish blood but I just figured it was my body just getting rid of everything. Tuesday I didn't take a ovulation test and no spotting or brownish blood. Wednesday morning I took another ovulation test and it was a blinking face (I use clear blue digital). BUT while I was at work I had to use the restroom and when I wiped there was blood. Like period blood. Not heavy but enough that I have to wear a pantie liner. I also have back cramps. Has this happened to any of you ladies? I feel lost and confused 😑. Also should I have a blinking face so soon after my period? One more thing. I did log all the info into the glow app and it changed my ovulation dates. It showed that I started ovulating on Monday even though when I took the test it showed low fertility. Can someone please help and explain this?!! Sorry for the long post 😕