Sick more often while breastfeeding?

Hi ladies,

I've been sick twice in the past couple months since my son was born. I'm EBF and wondering if this is the cause or if it's common for your immune system to be shot after giving birth. I'm 5 months postpartum.

I rarely get sick so I'm very surprised I'm sick again and was sick a couple weeks ago. I'm getting enough sleep and don't feel exhausted so I know sleep deprivation is not the cause.

Anyone else experience this?