i had terrible SPD pain in the middle trimester and now have awful upper back pain due to the gigantuan size of my breasts now. i am having regular treatment with an osteopath who specialises in pregnant women but have found the only real solution is not to spend the whole day upright. so mid afternoon i have a lie down for a couple of hours. If i am at work i do it in the first aid room. i am in to much pain to care about epople who think i am having a bludge. i have it also helps the SPD as well tho not sure why.