I'm 35 Weeks And 2 Days At My Last Appointment

I'm 35 weeks and 2 days at my last appointment my Dr could fit a fingertip in my cervix and his head was down there. for the past couple days I've been having cramps. Some are bad like I'm about to start my period. there's alot of pressure on my pelvic bone and am peeing way more now. The cramps don't just come and go it's like a constant pain just gets heavy then lightens