When should a home birth become a hospitalized one. 15 days overdue, sporadic labor. Now?
I hope you are being followed by a physician. Going past your due date has issues like less fluid in the placenta and the placenta getting older which can affect the health of the baby.
Call your doctor and talk to him/her 15 days is a lot. I think at this point you have reach a high enough risk you need to be at the hospital.