WELP (TMI) swollen bits

This is TMI so I do apologise but I really need advice!! - 29 weeks pregnant with twins and my feet and vagina have gone really swollen and my vagina is so painful nothing I do is helping unless I put frozen pads in the freezer. It’s agonising and so irritable/painful. My vagina is hot to touch and when applying cold water to ease the pain that helps but not for long.. the pressure is that bad when I’m standing they feel like they might fall out! (I know they won’t) but I’m explaining the pain... Did anyone else have this and what helped? I’m at wits end 😭😭😭