Very upset with doctors

I've had cervical ca and had part of my cervix removed. I had a successful pregnancy with a cerclauge. This pregnancy at 12 weeks they said you don't need a cerclauge but we will monitor you. Fast forward I'm 18 weeks now, my cervix is only 2 cm and I need one but can't have it because now it's too thin and scared. I'm so upset they could have done one at 13 weeks. The doctor just stared at me while I cried. The only option I have is hormones for the baby starting at 23 weeks if I make it that far. I'm so angry. This is the last baby I have to have my hysterectomy because I'm almost 10 years out and I can't risk having cancer again. I cry every day and totally mean to everyone. I can't believe this is happening. Baby is very healthy and genetically sound so if I lose her it's because of my cervix nothing else.