Anyone in the same boat?

My back is aching, honestly it feels like I’m 30+ weeks pregnant. It’s not cramping, just like a dull ache as if I pulled a muscle or slept wrong but it’s been like this since i found out I was pregnant basically. I am 5 weeks today. Sometimes the aching resonates into my hips. This is my third pregnancy in under 3 years. My oldest will be 2 in a few weeks and my second is 10 months old, so I don’t know if that comes into play either.

Just want to know it’s normal as I have had no severe pains or cramping and no bleeding.