Help?

Autumn

So I have a question..they say these are like 50miu or whatever. I took this with second morning pee last Monday after I had found out Sunday night on a cheapie. I got blood work Wednesday and it was confirmed Thursday. But my HCG level from the bloodwork was 44.71..so I don’t think these are 50miu. Because my HCG level has to have been less on Monday. Any one else this happened to?