Ay, mama, I'm glad you're okay after the operation! But please talaga, if the pain and gas are still bothering you a week after, go back to your OB or surgeon right away para ma-check properly. Hindi ka dapat mag-worry mag-isa about this, especially at 31 weeks.
Your doctors will know best kung kailangan mo ng CS or pwede ka pang normal delivery based sa condition mo ngayon, pero kailangan nila makita ka in person. A few of us moms had emergencies during pregnancy and the team really made sure everything was safe for us and baby. Take care, and don't delay ang check-up ha!