Contractions?

Recently lost a twin, I'm almost 21wks right now. Now, idk if my surviving twin is just a rough baby, or if I'm having small contractions. Whatever is happening takes my breath away and my stomach only gets hard on the side of the living baby. Never had mild contractions before, as my only birth experiences have been very intense contractions from pitocin induced labor, and c-sections. I know I have been really stressed lately, as we just got the news of the baby passing 3 days ago, but idk if these are actually contractions or not and changing positions dont really change the feeling.