Just try not take it personally, one cal always take a break if it is too much. If you work in the UK then there are laws to protect you in the work place, you could seek help and advice informally from HR department , or join a union. No one in the uk can be prevented from joining a union, by law. Nor my anyone in the UK receive a detriment because they are or are not in a union, so were any employer to take any action that could be viewed as such, you would have legal recourse against them, and the union would pursue it on your behalf.
You too, hope things work out.