AF Finally Showed Up Since MC On 1/29

Finally showed up today as I went to the bathroom and checked. I was worried because it's been over a month and nothing and I'm sure I have a lot of build up blood up there that needs to be coming out but thankfully it came. I was wondering if maybe since I always have had abnormal cycles. Maybe that's why because before I got pregnant my cycles would run around 35 to 40 days