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It all depends on when implantation occurred and your levels before then. Really, it all comes down to the second draw, and if it's doubling like it's suppose to. Don't count yourself out just yet. Has it been 4 weeks from your last period or 4 weeks from Ovulation? To be 4 wks pregnant it would be nearly 2 weeks after a missed period. Hopefully all is well and numbers double like they should, and there is always a possibility your calculations of how far you are, are off? You just never know.

Thanks for replying, my LMP was December 20th.

No idea when I ovulated, I got my first positive OPK Dec 28th (3weeks ago) and got 20 more positives after that. I kept getting positives and it turned out it was just reading an early pregnancy I guess. No way I ovulated for that long.

I thought maybe I just ovulated twice and might be getting twins but from my HCG it doesn't look like it. Cuz aren't ur numbers suppose to be super high for twins?

If your last period was 12/20, there is no way you are 4 wks preggo, maybe 1-2 wks. Ovulation generally occurs about 14 days give or take from the start of your period. And then implantation doesn't occur until about 6-12 days after ovulation. So again, you may be just barely pregnant, hence the low numbers. I dunno about the constant positives? But it may have just been a really fertile month? Opk' are never a sure thing. And testing everyday is no good either, lol, every urine is different. Sometimes it's less concentrated and so forth. So, again, way too early to worry. Odds are, the next test will double just fine! :-) Good luck...