2nd set of HCG levels

Chelsi
I'm Finding out 2nd Set of HCG Levels in the morning/afternoon. I had my levels checked on Sunday and they were 4262 at 5w4d. I had a small amount of pink spotting and since then have had very light brown/beige spotting. Not cramping, just light spotting.
I had my blood drawn again a few hours go to see if they are going up at the rate they are supposed to.
I find out at some point tomorrow what my levels are at and I'm am literally worrying to the point of making myself sick. I know worrying isn't going to help anything, but I can't stop thinking about it. I just have this bad feeling! Has anyone else experienced spotting that is ongoing?