I have what looks to be cervical mucus in my period, with awful cramps! trying to get pregnant. ?

Well: The menses can have mucus and some people produce more than others. These changes can be more pronounced when you get off the pill. The exact nature of your specific situation can be hard to elucidate but try 2 aleve (naproxen) 2 x per day for 5 days prior and first 5 days of the cycle. It reduces bleeding in some cases and definately pain.