Need urgent help :(

[panpanda]

Sorry to scare you all.
I'm in my second trimester.
Moved in to a new home 2 months ago with a long term contract.
We found out the whole building (fairly new, less than 10 years old) is due some extensive works that's due to fix the fire barrier in the building.
I am due when the building works start and will last for 18 months! I will be with a newborn!
I have a letter from my GP stating it's unsafe for me to live on such conditions and to move out.
The agency's response is absolutely horrible.
They said we will need to pay thousands of pounds if we move out early. And basically that it's our fault. Also called us "ambitious" for saying we must leave soon even though there's still 5 months before the works start.

There will be dust and noise pollution, entrance to the building might be blocked. They might evacuate the residents of the building for a few months. Lots of builders on site etc. They need to work around the whole building skeleton to replace the cladding or something. Both myself and the GP see it unfit to live with a newborn.

What do we do?? We did not expect not to have all this hassle let alone pay so much to move twice and they want us to pay on top of that their fees? I'm trying my best to stay calm for the baby but this is a very stressful situation.
Any concrete advice welcome!

Aren't all initial tenancies a 6 month assured shorthold? Or has that changed?
If it is, move on the 6 month mark.

If you are that bothered, maybe you are just going to have to suck it up and move on.

I had an extension done shortly after having my first, they absolutely slept through all the banging and noise. Brilliant

It’s probably not going to be as bad as you think.

Firstly, find out how much you’d need to pay and what the fees correspond to. Ask for a breakdown of costs. Re-read contract to find a loophole.

What kind of long term contract do you have? Which country? Is there no break clause?

Can you quote the relevant clause of the agreement that commits you to paying thousands?

They might evacuate the residents of the building for a few months.
Who are they? What exactly are the terms for the work being undertaken?

Presumably all the residents are in the same situation. What is everyone else's views on what is going on? Is there a residents' association?

As lots of people told you on your identical post yesterday
GPs are very unlikely to provide such a letter
The Contractors will have to adhere to H&S rules
You are no more at risk than anyone else

I don't think you'd get anywhere with that argument. If the owner knew before you signed the contract maybe you could argue that he withheld material information that would have effected your decision to sign the contract, I'm not familiar with UK laws. Here we have a rental tribunal you can take such issues too, maybe an equivalent body exists where you are.