Would seriously look into restarting the Blackmores there is so much in them than just folate all of which is beneficial both to the baby and also for breastfeeding if you are intending to do that afterwards. Check out to see if you have a Discount Vitamins store near you. Their prices are seriously good - cheaper than anyplace else. FWIW I also take Calcium tablets (as I don't drink milk) and Vitamin C tablets (to try to stave off colds).

From what I understand the sleeping on your back is to be avoided the further into the pregnancy that you get as the weight of uterus and baby etc gets heavier and heavier. I am lucky I naturally sleep on my side (yeah one thing I don't have to change).