Contractions?

Im 28 weeks and on friday i ended up in the hospital durle to contractions.. i was dilated (only 1) and they gave me a shot to slow them down and another shot to speed up the development process of my babys lungs had to go bak the next day.. well i didnt want to risk ne thing so i left work until further notice.. since then i have tryed to dtay off my feet it only hurt when i would walk but now its when i lay down or even move i mean i can take it but idk if i should go back in or not... its like my stomach gets really hard n hurts to move for like 30 seconds then it stops.. idk if its my baby just like stifing or what but it hurts... its also hard to breath like my chest hurts and my back behinde my ribs..