Having trouble with my little

I am 8 weeks today and I get so frustrated with my 20month old on a daily basis, its not just him, I find myself not wanting to have anyone touch me, not even my dog. I have a sensory disorder and it seems to be getting uncontrollable now. I did not experience this in my other pregnancies and I hate that I am getting like this. I have also been extremely fatigued and cant seem to get enough sleep, my first visit isnt for another month and I just feel like I am being a bad wife, mom, and dog mom. I feel like I need a vacation by myself just to relax my mind. Idk, I just feel like i am loosing it.