Okay so I've been pretty regular with my periods going every 21 to 28 days lasting 4 to 6 days long. My husband and I decided to start trying for a baby about 2 months ago. I have been tracking my periods and what I think is my fertile/ovulation days. I have to kids already 6 and 3, and have had 2 miscariages in the past. These last 2 months have been mornal as always. I took a home pregnancy test 2 weeks ago and it was faint but positive. I then waited 4 days an took another one and it was negative. I had my period on Sept.13 through Sept.18. Now as of yesterday I was spotting, bright redish/pink. Now today I'm bleeding heavy, bright red and a lot of feeling of frequent urination, cramping, and discomfort. Is there a reasonable explantion for this? What could it be?