Generally those period like apins are muscles and ligaments stretching. Thats what my Dr told me. I had them for a few weeks, they slowed down, but seem to be back. And I know they are not BH contractions, as I have been having those too! Sometimes quite painful and my tummy is hard and is squishes bubs, who in turn kicks my ribs, and head butts my bladder - not an enjoyable experience...lol

But when you have your next appointment, just ask if you're really concerned!