Rash during pregnancy

Cass

I’m 28 weeks today. About a week ago I complained of being itchy but it went away. I told my husband I was feeling uncomfortable so I went to the bathroom and saw this rash. I’m not feeling very itchy anymore. Any clue on what could cause it? I wasn’t laying on this side, I haven’t been outside in weeds, and I haven’t changed my laundry detergent. It looks worse in person but this is the best picture I could get.