Employment terminated during pregnancy

Hello everyone, I am 28 weeks pregnant currently. Worked in my company for more than 2 years. Recently doctor issued 3 weeks of hospitalisation leave due to some pregnancy complications. Submitted my hospital leave to my employer and my employer decided to terminate my service with the company. Can that even be a valid reason? I read online and it is actually an offence to terminate someone who is pregnant. But my employer said that they will compensate me with 1 month notice of salary without CPF and will cover my 16 weeks of ML. I am also supposed to get my bonus during Aug, but because of this termination they refuse to pay for my bonus. My boss told me to come back only after I give birth and settle down my newborn. I feel that it is very unfair on my end. What should I do?