CM advice!!???

Kaylee • Husband & I are TTC baby #1 since December 2014
]I've currently finished my fertile point, AF due 23/34th March.
I've been having the feeling while walking around doing jobs like I've just started my AF. That wet feeling but when I've gone to the toilet it's very creamy CM and more than normal amounts.
For the past 2 days I've had horrific cramps like AF cramps but so crippling I've been keeled over
Can anyone assist me?