Brown discharge

Hi,

I’ve been having a lot of brown discharge lately. I got my wisdom teeth pulled on Jan 21st and was suppose to take my period pills on the 23rd. I started taking clindycim for my sinus after the surgery and ever since I started those I still got my period while not taking the period pills and since my period I’ve had brown discharge for 2 weeks. Is this normal? I’m still on the antibiotics also