i agree with marydean..

you need to put yourslef first.
if your that uncomfortable, how will you cope at work, being one down is easier than carrying the work load of someone who is there.
im not hvaing a go im just saying id rather walk in knowing im one down so i can prepare myself for the day mentally than think cool everyone is on board lets go.

you need to rest and see the physio.

it sounds alot like me in my last pregnancy, i was in agony 24/7 didnt matter what i did it didn't go away.
i saw an osteopath and it helped alot..

please look after YOU and see the physio today..