When you are trying to conceive, the arrival of your period can be very disappointing. Whereas once you may have been relieved to see your period, now it means one thing. No baby yet.  It also means you must start the process of attempting to conceive all over again. Trying to have a baby can elicit a rollercoaster ride of emotions as you wait and hope. But how long is too long to wait? When is it time to seek the medical advice of an infertility specialist? I have been on this personal...