Hopefully they're good hormonal imbalances, but you know, whatever happens, you're pregnant. That's the excuse for it all.
My son thought my bladder was his very own beanbag chair, so yeah, it gets interesting. The cravings are odd at times, but it's best to just go with it. I couldn't stand the smell of fish from the end of the first trimester until at least a month after Niko was born.