Im between 4 and 6 weeks pregnant and every few days there's a light brown dc when i wipe. whether it be after sex or not. should i be worried?

Possibly: This is a problem that requires a face-to-face meeting with your doctor. In that meeting, your doctor will listen to you, perform a throrough examination and possibly order labs or other tests. Based on this information, he/she will be able to tell you what's wrong and what to do about it.

Vaginal bleeding : Vaginal bleeding in pregnancy should always be taken seriously. You may be having a miscarriage and in some cases, an ectopic pregnancy may initially manifest itself that way. First, avoid sex and try to rest as much as possible. You also need a transvaginal ultrasound to have a better idea about the fetus' viability and rule out an ectopic pregnancy.