My depotrust effective from mar 14-june12. til now i hav spotting. my lower abdomen getting bigger,my belly button getting darker. what is the cause?

Pregnancy worries?: If worried about pregnancy (due to not using contraception after June 12), one can do a home pregnancy test. Many women have occasional variation of their mucus discharge, some spotting between periods, a heavier period, a lighter period, a longer or shorter period, or even a missed period. Having one or two of these symptoms doesn’t always mean there is a medical problem, but Dr. can evaluate.