I am just shy of 18 weeks, and I am having MAD mood fluctuations. It is akin to the agony and the ecstasy. I am either over the moon with appreciation and super happy, or very depressed and wanting to hide under my covers for the whole day (which is not possible on any day because I have 2 young boys already). The think that is so striking about it this time, as opposed to with my previous pregnancies, is how polar the moods are with very little in between. Anyone else experiencing this?