Yesterday I had a lot of pressure/pain in my pelvis when going from sitting to standing and for the first few steps afterwards I was almost doubled over to be able to move. It eased after a few steps although I could still feel it a bit. I was ok when I woke up this morning, but still a bit achey on one side. Is this SPD? Or something else to do with baby? I'm 21w 4d now and never had this at all when I was pregnant with DS 4 years ago! Not sure what I can do to help/ease it. Has anyone got any suggestions?