I cant believe how fast it has gone already!would have loved to see the MW's face when you found the heartbeat hehe.
As for the headaches I have nothing to suggest, just can sympathise with you becuase I have headaches for 3-7days straight and there not nice

just make sure you are drinking plenty of water as this will help. and not sure if 4head is safe to use when pg ? Im sure it will be but you could give that a try, it helps a little.