Somthing aint right

Hi everyone iam 26weeks and 2 days pregnant..yesterday was the day it hurt so bad walking...i got a huggeeee pain in my lowerr abdominal ans presure in my vangina were is got swollen nd presure at once while tummy was tighting and lower back pain was instense...today i cqnt evzn get up without hurting in the same areas it did yesterday. And now i feel lkke i hqve air pockets in my belly and. They are NOT gas i tryed PUSHING GAS but nothing...STILLL THERE :( What should i do helppp.