Spotting outside of period 😩

Taylor • Married 09/22 with 2 beautiful girls Artemis Royale (3) and Iris Calliope (1)

So my wish app says my period is due the 12th but the last 2 months it came the 8th. I’ve been spotting brown and slightly red blood for 6 days now. Took a ton of tests which are all coming back negative. I have no idea what’s going on? I got off my birth control in February and am going insane already.