Tmi but need answers

Ok so the last three days I have been trying to check my cervix but when I go to insert a finger it feels like some thing is blocking the entrance to it. It's soft. I can move it and go further up but I've never had this b4.   I'm 34 weeks today.   And one??????? Please tell me I'm not crazy!!!!!  I do have a pic but it's graphic of my opening of my vagina if it would help any one?????   Please help