Wow! I had never heard of this before reading your request, so I decided to do a search on the internet, and I am glad I did. During my 2nd pregnancy, in the last 2 or 3 months, I developed a horrible pain in the pubic area, but figured it was just because the baby was putting a lot of pressure on the pelvis. Then in my 3rd pregnancy, I had the same pain, only much worse, and throughout the entire pregnancy- it was especially painful when I would try to sleep; I couldn't roll over or get out of bed without tremendous pain. I ended up sleeping on the sofa for the entire pregnancy because it was closer to the ground and easier to get up from. I never even asked my doctor about it, because again, I just assumed it was pressure, plus the result of 3 pregnancies in 3 years reaking havoc on my body. Thankfully I haven't had any problems after delivery. But in reading about SPD, I finally have an answer for the pain. I am so glad you posted this. Now all we need is a way to find relief. Two of the web-sites I found with some helpful info when I did a search were
http://www.plus-size-pregnancy.org/pubicpain.htm
http://www.permanente.net/homepage/kaiser/pdf/47261.pdf
they talk about the symptoms, and list a few ideas for relief. I'm sorry I have no tried and true measures, but again, thank you for putting a name to the pain. It's always nice to know other people have had the same experience and can understand how you are feeling. I am writing this info down so when my husband and I decide to get pregnant again I can talk to the doctor.