Hcg levels at 4 weeks 3 days

jj

I went to the er tonight due to cramping bad earlier, it lasted about an hour but did go away now I'm having very light cramps if anything. No bleeding. But dr said my levels are 426 and when he said it he said "your levels are 426 so about two weeks" and didnt really specify anything whether that's normal or not. He wants me to have them rechecked either friday or monday to make sure their doubling.