anyone else or should I be worried

My last period was may 12 (start day). I've been told I'm 6 weeks but I've also been told I'm only 3-4 weeks. Soooo! I had my blood drawn and my hcg was 1398 and my progesterone level was at a 7. From what I've read on here that seems awful. My nurse said bc I'm so early it's normal, but on the lower side of normal. So I'm going to get retested Thursday. Has this happened to anyone else??? Any good outcome??