Should I be worried?

Zanita

So the last two days that I have woken up to go use the bathroom (around 1am) I notice I am bleeding, not to much, only fills a panty liner (TMI sorry, light bright blood,) . I am 10 weeks pp (C-section) and stopped bleeding at 7 weeks. I am om the birth control injection (2 month one ) and have only had sex twice with my husband since giving birth (last time 2 weeks ago). Is this nornal or should I be worried?