Everything annoys me

I just feel like everything annoys me! I'm 5 weeks 4 days and I'm just a meanie. I feel bad for my husband... He's trying to be patient and I'm trying not to be so irrational about everything but I just can't help it. Everyone and everything annoys me right now. This is my 4th baby and I go through this every time. My kids are my ray of sunshine but everyone else gets on my nerves. Just felt like venting...