2cute. i'm so sorry you're gong through this, at a time when you need all your strength to get your life together and look after your beautiful boy.
what kew and paddle has said is right - GPs got a right to apply but that doesn't mean they'll get it. from what's gone, would be very unlikely. and, yes, document everything, however in turmoil you're feeling inside adopt the reasonable stance-- tell the powers-to-be what they want to hear.
god, i know it's easy for us to say, as you're frightened of them and you're feeling vulnerable and alone, but, you've got to summon every bit of strength (which is more than you know) and sense of justice, and stand up to them - for your sake and your son's sake.
sorry, can't give legal advice, not my field, but, as ros says, sure if you'll start a thread (apologies if you already have) sure you'll get valuable advice.
if i can help in anyway, please give me a shout and here to talk too if you want to