Drink some water and lay on your side, count them, make sure your stomach gets hard when you have them, but if they're really painful and uncomfortable it's better to know and know it's nothing and guess and it actually be something. All the L&D nurses told me that, even my OB.

If you call your OB they will let you know what to do you're still early and you don't want to chance it and of your doc approves the visit it's substantially cheaper than just going in.

Wait. Drink some water. Only 3 per hour they'll just send you home unless your water has broken or you're bleeding.

Call your OB! That is too regular for it to just be bh contractions.