Please help

My cervix is really low and hard. It feels like it's closed off. What does this mean? The other day during sex, it felt closed, had a hard time putting it in. Then last night I put the monistate day/night suppository in. It again felt closed and it hurt putting it in. I couldn't even get it in all the way. I had to use my finger to get it further up. Then I went to lay down. I got up to get my phone and I noticed the suppository fell out!! 
​Why is it so low and hard feeling closed up?