Hi Fran,
My labour started off similar to yours (we also live roughly 30-40mins away from our hospital). This went on for about 1 day with me and when I went in to be induced I was 4-5cm dilated!! So I would just call the hossy to see what they think, they might even just get you to go in for monitoring and to examine you etc.

Hope all goes well!!

*hugs*