Hi, my last period was 31st oct lasting 4 days it was really heavy and painful with a lot of clotting. I'm using ovulation strips to chart ovulation we got a positive on 23&24 of November. We had sex on both 23&24 of nov. I had some mild cramping last week then it stopped I've also had terrible headaches, I got a small amount of brownish discharge when I wiped on Friday night 6th dec followed by red bleeding requiring me to use a pad yesterday 7th dec but with no pain or clots. It's all clear today ? Could I be pregnant ?