Are period cramps always bad?

Emily
Are period like cramps always a bad thing at 33 weeks? I've started getting them tonight along with sharp pains in my cervix. They aren't super bad but kinda feel like they're getting worse. I don't want to panic, so I'm wondering if they can be normal pregnancy pains this far along? I've had Braxton hicks before but I also have a binacurate uterus (heart shaped) so I tend to over analyze. Thanks!