I've been fine since I got out of bed and was able to do my usual leg and piriformis stretches without pain. I'll be seeing my personal trainer tomorrow, so I'll show him where the pain is to confirm that it's the sciatic nerve and not something else. I texted him about it and he's going to show me a few more stretches to add to my routine. He's an experienced PT with a degree in exercise physiology, so he's got a good knowledge of anatomy. He's helped me address problems without needing to see a doctor in the past, and I know he won't hesitate to tell me if he doesn't have the knowledge to help.

So fingers crossed that I can nip this in the bud!

Thanks.