FTM bh or contractions?!

a few hours ago i had the typical bh, tightness in my upper abdomen and short of breath for a few seconds. then a little after that the cramping started.. it’ll start like in my butt (like gas) then move to the front like a period cramp, my stomach gets tight but the only pain is the cramp like pain. it’ll stay like maybe 30 seconds then go away. i haven’t noticed a ‘pattern’ but it’s been coming and going for a couple hours now. i’m 38 + 1 and was 1cm & 50% effaced last week. could this be it?! my husband is working a hour away tonight, should i tell him he needs to stay home? or is this most likely more intense bh?