39 weeks pregnant and already 1cm Dilated, How to speed up labor?

Today I am 39 weeks pregnant now. Yesterday my doctor told me that the baby has dropped and can easily feel her head when she was checking my cervix and that I am 1 cm. She said that my cervix has thinned out 50%. What I want to know if there is a way to speed up the process to getting my labor going. I know three sis , my husband is gone to the army. And and i've been doing a whole lot of walking and drinking the raspberry tea all together. I usually do and hr of walking and drink the raspberry tea 2-3 times a day. So far, all i've been feeling is uncomfortable belly tightening and a whole lot of pressure in my pelvic area. Does anyone have any suggestions on what I should do? I'm impatiences for theses last 7 days left..aargh!!