I don't recall any headaches and I've just checked my journal that I kept for my first few cycles and the only thing I've reported is feeling quite teary and moody but only around day 9 or 10 of the synarel. Of course this could have been due to it being my first cycle but I was also reassured that it can be a side effect.

I'm sure the synarel is doing it's thing - just as you are. It's hard not to compare and fear things are not going as planned, especially until you have some blood tests to reassure you, but each of us respond in many different ways. It sounds like comparing how you are reacting to how others have is causing you more stress than you need to be under, so be kind to yourself.