I believe I'm starting to get Braxton Hicks contractions... I thought it was just baby rolling over (sometimes it obviously is just that, a hard lump of him pushing out on my belly) but now sometimes it's my entire belly going rock hard for upto 20 seconds at a time at random times of the day.. Laying down or just going about my day. There is no reason to worry yeah? They don't hurt, just kinda uncomfortable sometimes dwindling on what I'm doing. But never serious. Baby is so so active too!  My belly is just a playground of movement at moment!! I'm 23 weeks today.