Anyone know or heard of this?

Hey, basically I had a very odd period last week it was very dark at first then got lighter and I get heavy period witch leads me to wearing 2 pads and a tampon and even then I sometimes soak through them anyway last week it wasn't so heavy and this morning I had really runny CM that it slid down my leg as I got out of bed and also about 3 min ago went to the toilet and seen bluey discharge that not all I also had some extreme AF symptoms before I came on too witch in the 10 or so years off having them I've never had! Any advice please?