How Do I Survive Pregnancy with Two Kids and Chronic Exhaustion?

HI everybody, I'm Amanda. I'm 14 weeks along with my 3rd child and chronically exhausted. My kids are 13 and 5. Hobbies include sneaking chocolate into the bathroom for 'alone time', wondering why my back hurts, and sneaking in cat naps whenever possible. I'm a lot of fun. lol.