Last month DH and I started TTC and I was CERTAIN I was pg! My chest nearly doubled in size, I was super nauseated, I smelled ammonia (every time I'm pg I smell it!!! Anyone else get that???) and I was super tired but I kept getting .... so I waited and then AF came 4days early! I'm like clockwork so I was totally floored! Was it all in my head? I got a full and unusually ugly too! What gives!?!? oh and I'm still smelling ammonia a month later!