So this is a new one on me - and I'm curious if anyone has had a similar experience....

I started doing a ride everyday challenge in December, and have continued into January (subbing some other activities in Jan). This is much more time than I have ever spent on a bike trainer (and more than I have spent on a bike in a very long time). Normal saddle issues are fine (i.e., little chafing, no sit bone pain). However - my tailbone hurts. Seriously hurts. There is nothing else this could be. The only thing I can think of is that I'm sitting up on the trainer in a way I never do on the road - and when I do, I'm bruising it? There's only ever minor discomfort on the trainer (and only while sitting up), but afterwards, the pain can be quite sharp. As I'm sitting here, if I squeeze my gluteal muscles hard, I feel some discomfort.

Is this something that goes away? I'm sure I should train myself to sit up less - but being on the trainer is still boring and moving around usually feels good. I don't think it warrants a doctor visit or a bike fit visit - it's just....odd.