Progesterone

So I’m 16+5 and I’m still currently inserting a progesterone pill vaginally every night. I previously had a missed miscarriage and a chemical pregnancy so when I became pregnant this time I just asked for progesterone because I thought I may have low progesterone so my doctor prescribed it with no problem. My ob said he would keep me on progesterone until I’m 20 weeks. I’m nervous to stop taking it though... if you’ve been on progesterone was everything okay when you stopped taking it?