Anyone else been to high risk to work?

Basically my employer has told me I'm to High risk to work. I work in housekeeping. Yes it's been hard as I have spd but he isn't willing on putting me on other department as 1. He will need to train me and 2. Again high risk. My midwife has put me on aspirin as had pre eclampsia in previous pregnancy and high blood pressure. I can't go on maternity yet as not 29 weeks. I'm only 19. Don't want to go on sick as it might mean I might need to go on sick with my other job. I work in retail with other and it's so much easier and my employer is more understanding. It also didn't help that my colleagues pretty much slagged me off by saying how crap I've been. These people seem to forget that before I was pregnant I pretty much did the bloody job when 1 in particular sat on her ass all day. She even injured a guest and still got her job and here I am feeling like I'm being forced to go on sick. I'm in the uk btw.