Is this labor?

Alright ladies I've been having what I believe to be contractions they are period like cramps and my lower back I tried timing they seemed to last about a minute and come every 2-8 minutes for about an hour then they let up for an hour and were more sporadic but I went to the bathroom and had some light brown discharge on my pad. Now cramping again! 38w2d was 2cm dilated at 36w2d haven't been checked since