Pregnancy can be a wonderful experience.
It can also be nine months of heartburn, coming thisclose to peeing you pants at the grocery store, and wanting to eat someone's arm from hunger while simultaneously crying because an elementary school crossing guard "looked at you weird."
What I'm saying is, it's all going to be fine. You don't owe anyone an explanation for your behaviour while pregnant. YOU'RE GROWING A PERSON. If anyone gives you grief, or demands explanations for "quirks," or — God forbid — tells you you're being dramatic or delicate, you just send them this.