i would also suggest maybe ringing teh hospital
at this stage it is not silly or uncommon to ring the hospital and go in and get checked by teh midwife.

sometimes its easier and quicker than a DR and they know your situation anyway.

i had swelling badly in the last 2 weeks. couldnt wear shoes or my rings but was just fluid retention.
got put on fluid restriction and told to resta dn keep legs elevated.