Rash on tummy. PIC INCLUDED NOT TMI

Just Me • Have a 4 year old daughter and a Newborn GLOW baby girl born 22/04/15..so in love 💕
I'm almost 28 weeks and just noticed a rash all over my tummy. It doesn't itch or anything and I havnt changed laundry detergent or anything so not sure what it could be. It feels bumpy also. Any ideas lady?