Need advice please

Even though I have three kids already there are still things that are new.yesterday late morning I noticed my underwear were a little wet when I was up and around (32wks 3days). I changed my underwear twice. I was thinking it was maybe sweat even though I was in ac all day. I have been having strong cramps in stomach and lower back since last Sunday. I had some strong contractions but nothing close or regular. I woke up this morning and through the night it was barely wet but as soon as I was up they are wet again. Do I call? Do I go out to get checked? I had my water break like big gush down legs with both older kids and my youngest they broke my water. It does not smell or feel like I have peed. Any advice or experiences welcome.