Cramps or BH?

laujam31

So for the past few days I notice that if I'm active for too long I start to have really uncomfortable cramps.  They are down low and decently painful.  They will last a few min, then subside mostly, then come back and be painful again.  If I lay down, they go away.  Are these just cramps, bh or actual contractions?  I think I have some time for actual contractions but seem to be getting sporadic bh that are painful.  They go away though. This feels different though.  TIA