Walking zombie!

Holy shit, excuse my language. I'm at my wits end with my 14 month old son. Mostly his sleeping/naps. It's been a drama. When does this end? He's only now cutting his bottom teeth, he already his his two top teeth...so 4...lots more to go. I'm also 21 weeks pregnant, and I'm exhausted myself sometimes. I'm feeling kinda lost at the moment, and it's affecting my mood & parenting in a way. I feel like I could do more with him but because I feel drained it's hard. Not trying to complain, just needed to vent. Anyone else going through the same? any advice? indoor activities? etc.