What Causes Discharge Of Brownish, Pink White Gel Like Substance?

I had a cyst removed from my ovaries about 7 weeks ago. My husband and I have only had sex once since then, however I was on antibiotics, and birth control. My first period after surgery seemed fine, but I should've had my period this week, and I only lasted about two days, and was so weak that a tampon was not needed. Today(3 days after the last sight of blood) I'm discharging a brownish, pink white gel like substance. Should I go to a doctor?