Cramps!

Jess • Am 27 and my DH is 28. We are pregnant with our first baby! We are due 05/17/15

Am 7w6d and have been had mild cramps seems week 5. Lately I've been experiencing some pretty intense cramps especially @ night to the point of being woken up by them. My OB says cramps are normal, its just my cervix expanding but is anyone else having cramps on a daily basis and do they ever end?