Hi Ems, I have something similar, I get pain around my coxic and also shooting pains through my bum cheeks and down my legs. My research has led me to think it is mild SPD. For me it's usually just twinges of pain if I bend over, but not every time. Although last Thursday, spent the afternoon shopping in town and by the end of the day I was in quite a lot of discomfort and ended up limping my way back to the train station. I haven't spoken to the midwife about it yet, mainly because it hasn't been so bad that I needed to call her about it and haven't had a face to face appointment for a while, but I've got a monthly check-up tomorrow so I think I'll mention it to her then, just so she's aware in case it starts getting worse and she'll be able to give me some advice on how to manage the discomfort.