I'm tired and in pain... trying to adjust to life with a new baby and a 2 year old. trying to not get consumed by the rough nights of no sleep. I adore my baby, I'm happy, but my whole life is tired. I saw some things tonight that really got me in my feelings and for the first time in 3 weeks I just cried... once it started I couldn't stop it. I need sleep.
You'll need a chance to catch some sleep. Do you have anyone nearby, besides your husband, that you can turn to for help?
I know exactly how you feel. No one understands the exhaustion more than a parent going through the same thing.
crying is a good release, cry as much as you need to. I cry everyday
Crying is like a shower for the soul.
Gosh, I had my daughter when my son was only 2yo. It was harsh, I was constantly sleepy and I remember one night I fell asleep while walking with her in my arms. I woke up cos I slammed my head again the door frame. Luckily it was my head and not hers. Please ask for help. Even just to have time for a nap, or to relax, to avoid being exhausted. You need to
be healthy to look after your children 
awww I remember this feeling very well. SO in love with new baby but so overwhelmed due to lack of sleep. I had a 4yr old, 2yr old and newborn at one point. FUN TIMES lol. I hope someone could help you soon so you could get some rest 