What Causes Pinkish Vaginal Discharge With Frequent Urination?

Hi im am 20, & my body has me alittle worried. I had my last period the 22nd of march, & since then i ve noticed some changes. In the last week i have been urinating, eating, & sleeping more than i usually do & today i started having a light pink discharge when i wipe. Earlier last week i took 2 hpt & they both were negative. So i dont know if im pregnant or if im over-reacting. Advice please.