Braxton hicks?

Nickol
I'm a ftm so I'm not sure what these feel like. I will be 33 weeks on Wednesday. So far this pregnancy has been pain and problem free. Last night I started having pains deep in my pelvic area. Mainly on left side. Wasn't seriously painful but different than anything I've felt before. Today have been having the same pain sometimes deep in pelvis and sometimes higher up. I also have been feeling weird like I'm about to get my menstral cycle. Can any of you more experienced moms tell me if these are Braxton hicks contraction or is it something else?