Help!!

My monistat suppository won’t stay in! I’m 38+2 weeks pregnant if that makes a difference. The first night I didn’t have a problem with it, but now I can’t get it to stay. I tried the applicator first without success then I switch to just inserting it with my finger but I can literally feel it slip out along with my finger. (I am laying down during this process) anyone else have an issue with this? The external creams arent giving me any relief