Work advice please

Amy • Mrs. Storer to be 💍 Our first baby is due 31/05/2016 🍼💕
Hello, I recently left my old job in a max secure unit as after a year, the violence and 14hr shifts got to me. I've returned to my old company, highly reputable and lovely. Should never have left. (Grass defo isn't greener on the other side) anyway, when I was offered my job, I wasn't pregnant. I've been waiting over 2 months for my DB'S to clear and to complete my training. In this time I became pregnant, exactly 7 weeks today. As a HCA of course I have to tell them i'm pregnant. I'm in the middle of training and will be ready for work next week. Now, what do I do? As i'm worried they won't start me as i'm pregnant. I honestly did not mean for it to happen in this order, what do I do? TIA x