4cm Dilation @ 38 weeks & NO pain. Anyone else going through this?

Paola
Just had my first cervix check at 38 weeks and 1 day. I am 4 cm dilated and have felt NO PAIN!! I was so surprised when she told me how dilated I am. She was trying to have me go to labor & delivery, but I'm not ready for the baby to come and prefer she comes when she's ready. I've felt minor cramps and a few sharp pains here and there but nothing significant. I also have occasional pain in my back on my right side, but it's only uncomfortable, not unbearable. Has anyone else felt this way? This is my second baby and I started freaking out today wondering if I'll need to head to the hospital soon. I wish it wasn't so unknown when the birth will happen. Some people said they give me til Thursday, but I still have had no pain, no water breaking, and no discharge except the minor blood from the cervix check. 
Hope there are others out there in the same situation or who have had this happen and let me know how your labor went!
My due date is July 18