Need yr advise Mummies

Hi Mummies, currently I m at 34 weeks expecting Twins. Last week I underwent preterm threaten labour which was scary. But doc saying it's Best to deliver only at 37 weeks via c sect. But guess their weight have been pressing down and am experiencing extreme pain walkin and also pain Ard my pelvic area. Is there any way to ease the pain or by me opt-in to have c sect much earlier, will it affect the babies.. confuse first time mum.. Hoping to get a solution as it's been putting a lot of pressure