Quote Originally Posted by Wishfulvater View Post
If we have been unable to conceive naturally, wouldn't this indicate that the tubes are blocked rather than spasming?
The fact that you have been unable to conceive naturally could be due to any number of things some of which may remain unknown. To answer your question however, a spasming tube may cause the tube to behave just the same as if it were blocked- ie: just not let the egg through.