Pregnant?

I have a Mirena but I felt the wires sticking out a little so I got worried. My BF and I had sex while I was on my period so I'm not sure if I'm pregnant or not. I did the homemade bleach pregnancy test and it came out positive but I read it's m not accurate. I did the toothpaste pregnancy test and it came back negative. I'm not sure what I should do am I freaking out for no reason?