I haven t had my period in over a month, and had sex in nearly a month. The last time I did, I used a condom, but was showing signs of pregnancy. I took two urinal tests and they came up negative, but last night I started a very light pink flow, which I learned could be implantation bleeding. I m really concerned and don t know if I should go and get a doctor s pregnancy test or if I should wait a few days to see if it s just a light start to my period.