Hcg levels !!

So today i went to get my second hcg level test and at the appointment I found out my first hcg level came at 537, my doctor immediately broke my heart by saying that my hcg is low, but after researching I’ve seen so many ladies have lower levels and had healthy pregnancy’s,, so my question is , are my levels really considered low? Btw my levels were checked on 5 weeks exactly but since idk my lmp I could have been 4 weeks and a couple days