Okay so I had unprotected sex 2 days ago. The day after I had sex I woke up and went to the bathroom like I usually do, so as I'm urinating I see that I had light red blood in my underwear but it wasn't period blood, so I thought nothing off it, every time I went to the toilet this day and as I wiped I noticed that I would have light red blood on the tissue, when I went to bed that night I started to have a cramp in my stomach for atleast 2minutes and then it went. The next morning (2 days after I had sex) as I woke I felt like I had started my period because I felt really bloated and had a little cramp, so as I went into the bathroom I had 3 circles off red blood on my underwear and it looked like fresh blood not period blood. So I put a sanitary towel on thinking that it may be the start of my period but as I went to change my sanitary towel I had a red brownish discharge on the towel. During the evening I started to get another cramp but now I have less bleeding than I did before, is this possibly a sign that I may be pregnant??