I would recommend getting a natal hypnotherapy CD to listen to before you go to bed. I went on a course as well when I was pg with ds which I would highly recommend, but I bought the hospital birth one from here: www.natalhypnotherapy.co.uk/7.html and it was really lovely to listen to, very calming and I ended up going into hospital for an induction very calm indeed! Good luck
baths, record crap on telly and watch it when yr other half is not there, chocolate, sing loudly when on your own unless you have a good voice, write lists and prioritise a few things a week, oh and breath!
I thankfully don't get stressed, but started a prenatal yoga class last week mainly to help with hip problems i have and it is very relaxing. I think it would be really benefical if you are stressed. They run a weekly class for an hour in my local children's centre and it's only £2.50 as session. It's great to go to a class as there is nothing else for you to do when you are there but relax and have time for yourself. I'd highly recommend it.