cramping?

so I will be having a repeat c section in November (currently 23wks) my first born was an emergency c section due to her being in distress. (cord wrapped and she pooped inside me etc...) anyways lately I've been feeling sharp pains in my sides. doctor says round ligament pain but I never once had this with my daughter. it hurts for a good 30mins before slightly fading then turns to a dull ache but I'm just curious as to what else this could be...