Spotting continues

Anyone here got same situation as mine? I'm on progesterone for 6 months to regulate my period as my OB prescribed. Starting April, I started to stop taking progesterone. Got no period on April then got period starting May 22. Got heavy period for 3 days then got brown spotting for 4 more days. When I thought it already stopped, I got red blood spotting again for another 2 more days then still continues today.. It's my 3rd day spotting red blood. Help anyone?