Should I Worry?

Chambree
I've been having some brown discharge for the past 2 days. Its just a little in my underwear and when I woke after I pee. I'm not having any contractions and baby is very active. I am cramping when standing though. I also have a cerclage in place. Is this something I should alarm my doc about or should I wait to see if anything gets worse? I'm 24 weeks by the way.