Hi Effy,

Sorry to read about your pain.

I agree that you should make sure that your fit is right. This being said, for some reason a bike on the trainer never quite feels the same as a bike on the road.

I was going to suggest that your bike is maybe a bit too long on the front side (which caused a lot of elbow pain to me when I first started riding) but reading what you say about your saddle I think you should have all the variables considered together, at the same time, by a fit professional. If you feel like you're falling forward the solution is not necessarily to tip the saddle, it can be a distance matter. Don't be discouraged, but I don't think a single "quick fix" will do the trick for you.

Good luck!