Yep BH do not come at regular intervals, what ur experiencing is probably early labor. Just keep track of them and how long they last before they go away and come back. Real contractions should take ur breath away and paralyze u from doing anything except stand there and endure the pain until it goes away and ur fine like nothing happened, then it comes back. Goodluck!
I was doing that also. As long as you know they are just BH, try this. Drink a large amount of water in about 30 minutes time. My doctor had me drink 50 oz. Then lay on my side. It may take up to an hour of rest and all that water to help slow down the BH. If they start to hurt and don't go away after that, definitely at least call your L&D dept.
If you are having contractions every 5 minutes that's a real labor.