I had sex on the 4 yet before this I had already sore breast and had some cramping and I knew I was close to my period . However 2/3 days after I got some very light pink bleeding , so I freaked out because I tought it might be implantation bleeding and my Brest where even more sore , however the next day then I got heavier flow , bright red flow and a lot more cloths than usual. I am very concern and this has caused me a lot of stress so I am unsure if it is a possibility that I am pregnant or if my body is reacting to the stress please help !