Post-op extreme and extensive swelling. Swollen to the point where it is affecting my mobility - what do I do? (Photos)

BBL performed in Spain on 19th July -liposuction to arms, abdomen, back, flanks, mons pubis and thighs. I'm now 2 and a half weeks post op. I am back in the UK and have compression stockings for my legs from my GP. My pubic mound is extremely swollen and one of my labia hangs downwards by about an extra 4cm! I try and elevate my legs as much as possible -difficult as I cannot sit on my bottom. Any help or advice would be much appreciated. Should I seek diuretics (water tablets)? Thank you