Feeling very confused. On Christmas Eve I started bleeding, it lasted about 3 days and was heavy enough for me to believe it was AF. I completed a hpt on my OTD and had a very faint line, so I've continued to test each day with the first wee of each day. I'm worried because of the bleeding that I had. Is it possible that this is a chemical? I don't want to get my hopes for them to be dashed.