One thing I've read and been told about by midwives is that babies often arrive once the mother has come to a kind of 'peace' about things.
I really believe that this is true in many cases. I had so much on my plate the months before DD was born. We had planned to build an extension onto our home. The extra room was supposed to be the office while what was already the office was then to be the baby's room. Well, the builders were slack and all they did was dig a hole in the garden. We were constantly arguing with them until they finally said they'd start on DD's due date. WTF It was meant to be finished long before then? No way was I having builders in the house with a new baby. On the Friday DH and I went to see a lawyer about getting out of the contract and getting our deposit back. So that issue was dealt with.
On the Sunday was a family member's 60th birthday. I was asked last minute to create a multimedia presentation slideshow with millions of photos. All had to be scanned first. It was sooooo much work. I finished it on Sunday morning at 1am (only hours before the birthday party). It was such a relief to have finished that adn a huge weight off my shoulder. 3 hours later, I woke up for a pee and had bloody show. Then I felt the first contraction. DD was born 12 hours after that.
I really do think that having all those issues dealt with helped get things started. And as a bonus, I didn't have to go to the birthday party (really wasn't looking forward to it)

Hope things will happen for you soon, hun!
Saša