RED-BROWN DISCHARGE

hi! I’m on my 9th week right now and I have this brown discharge parang red to brown to pink discharge on my 7th week pero nag pa check-up na ako right after i saw the discharge and thank God baby is okay and niresitahan ako ng progesterone for 15 days, it’s been sobra two weeks na I still have this discharge, gaano po ba katagal to? Should I go back to my ob and have it checked again? #pregnancy #advicepls