so I had sex a week before my period. I have really looking cycles around 35 days or so. I was 4 days late on my period and when it did come it was way lighter then usual but still heavy and only lasted 3 days when it usually last a week or two. there was only 2 days of red blood the 3 day was brown discharge. I've been feeling dizzy. and my stomach feels fluttery which I've never felt before. ..