Just before DD2 was born I couldn't sit down and felt lots of pressure. I couldn't wee sitting down (had to hover ). It started about a day before she was born and I was convinced she was engaged and v low. I had a very fast labour and it turned out she was breech .
Sorry to say its just yet another discomfort we have to suffer during late pregancy. Its not nice but will end soon enough! I found as soon as my baby arrived all the aches and pains went and I could get out of the bath unaided, cut my toe nails and hop out of bed no trouble!