HELP! What’s going on?!?

I had a positive ovulation test on the 13th of November. I had back pain and cramping the next day. Today I decided to take an ovulation test because I usually start having period symptoms by now. (I have run out of cheap pregnancy tests and I know that an ovulation test can pick up on Hcg). Well the ovulation test came out positive. I took a blue dye and it is a faint positive (yes I know blue dye is unreliable). I took another ovulation test, also positive. But FRER is still negative (I did not take any of these tests with FMU). Anyone had this happen before, or any idea what’s going on?