Bleeding during ovulation days?!

So I have been on birth control for 3 years. I had the Nexplanon Implant in your left arm. Worked perfectly, 3 years passed & it was due to be removed. Husband & I decided it was time for baby #2. I had my implant removed Jan 5th & have been tracking my cycles & having sex almost everyday. My cycle was on Jan 9th-15th... According to my Glow Chart my ovulation week was Jan 25th - Jan 31st. However I have been bleeding heavily since Sunday (Jan 29th) and still am today. Whhhyyyy?? Someone help? Anyone experience this? Here's my Glow Chart Attached.