My last period was on 4/20/15, I have been on a regular cycle for years and I have horrible nausea along with other symptoms due to my period so I know when my periods are comming about 2 days before they start. Me and my boyfriend have had unprotected sex all month I am 7 days late for my period I took two tests with one negative test and a few days later one came out with a full control line but only half of the test line. today me and my boyfriend had sex and when I used the restroom I had some brownish discharge I have had a pad on all day with slight bleeding. Could I be pregnant?