I'd like to offer you some comfort. All of my children were born at home. All my boys (3 so far) were born after their "due date". My last in particular was born 18 days after! We did everything to get him to come! Anyway, first off I want to reassure you that you are not overdue until 42 weeks. The average pregnancy lasts 41 weeks 1 day....which also means that a little less than half of pregnancies go past 41 weeks 1 day. Your baby and body are wise! Treasure each day and don'focus on getting things started. I know this is difficult to do.
As I know we can't give medical advice on this board. I will point out some things I did and then you can look it up. My favorite resources for further info is www.gentlebirth.org
Talk with your midwife/careprovider before doing anything. Also, do not use castor oil...I have seen my desperate doula clients do this before some other things and their water breaks without labor or their baby passes meconium in-utero without labor. It should be an absolute last resort.
I also did nonfetal stress tests at the hospital in the end to continue assessing baby' enviornment.
Check out (in order of suggested and many in conjunction)
-Being intimate with your partner (you must also have an orgasm)
-Evening primrose oil
-Acupuncture (this worked once for me...a minimum of 3 treatments are needed)
-Chiropratic adjustments...particularly Webster's technique....(a minimum of a few adjustments)
-Herbal support -there are many suggestions
In the end it was all of the above list and the herbs after 1 week and finding the right herb (you can pm me about which ones my midwife suggested) that brought my 18 day "late" baby. (He was 10 lbs. 3 oz.)
Also try the old wives tales...I did,....if nothing else it has made for a great birth story. One of my baby's came after a fire alarm went off (she had mec, as well), one came after a bumpy horse drawn carriage ride in the park.
Essentially, this is the beginning of your birth story, as well. Enjoy the time.