So I'm a day late on my period. Monday I had a blob of brownish mucus and thought for sure my period was coming. It has come on the 3rd of every month since July. It didn't come yesterday have taken heaps of cheap tests all negative. Until this morning I took one with FMU and at first it looked negative. Walked away fed my daughter. It was left for probably an hour. Came back and there's a faint line there. I took another test just now NOT with FMU and with a first response and no line so far. Do you think I have a chance?