What Causes Pinkish Vaginal Discharge, Heavy Periods And Nausea?

ok, I always have a regular period of 27-28 days. never late or early. After my last period which started on april 3 and ended on the 10th, me and my husband has relations. He used a condom, but after he ejaculated he rested for a couple of mins. the started again and ejaculated a second time, right after i started feeling some liquid leaking from the condom, but i didnt pay to much attention to it. A week later i started spotting first pinkish, the brownish for about 4 days. Then, when my period was supposed to come, it was late for 6 days. It came after the six days, lots of blood, but no pain. I have a lot of nauseas and other pregnancy symptoms, but i really dont know whats going on with me