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Gem2010 · May 4, 2010, 04:02 AM

Right, this is my 3rd pregnancy, we have planned it, I was taking my temperature and opking so I knew when I'd catch the egg;
My last period was 19th March 2010
I ovulated on and around 6th April 2010
Before this, I had irregular periods.
My first positive test came on a First Response at 11 dpo
My due date from LMP: Is 24th December making me 6 weeks & 3 days
My due date from ovulation: Is 28th December making me 6 weeks
On Saturday just gone, I had a ultrasound as I was having slight pains, she could see the gestional sac but nothing else, she asked if my dates were out, I said I wasn't, the only thing that could be out was the 4 days between my period dates and ovulation dates.
I then had my blood taken on Saturday and again yesterday on Monday and I went today to get my HCG results, they were 18,000 so they had gone up from 12,000 on Saturday, she says they were great results and that she'll have me back next Tuesday for another scan, should see a fetus then...
So will she see a fetus then? And how many weeks do you think I am?

Gem x

J_9 · May 4, 2010, 06:08 AM

At 18,000, you would approximately be somewhere between 7-8 weeks pregnant as seen by this chart...

Guideline to hCG levels during pregnancy:

HCG levels in weeks from LMP (gestational age)* :

* 3 weeks LMP: 5 - 50 mIU/ml
* 4 weeks LMP: 5 - 426 mIU/ml
* 5 weeks LMP: 18 - 7,340 mIU/ml
* 6 weeks LMP: 1,080 - 56,500 mIU/ml
* 7 - 8 weeks LMP: 7, 650 - 229,000 mIU/ml
* 9 - 12 weeks LMP: 25,700 - 288,000 mIU/ml
* 13 - 16 weeks LMP: 13,300 - 254,000 mIU/ml
* 17 - 24 weeks LMP: 4,060 - 165,400 mIU/ml
* 25 - 40 weeks LMP: 3,640 - 117,000 mIU/ml
* Non-pregnant females: <5.0 mIU/ml
* Postmenopausal females: <9.5 mIU/ml

Found here: Human Chorionic Gonadotropin (hCG)—The Pregnancy Hormone : American Pregnancy Association

However, as a Labor & Delivery nurse, I can tell you that as far as due dates go, we estimate your due date by your LMP, not your ovulation date or your HCG levels.

At 7-8 weeks the chance of seeing a fetus is slight, depending on how the ultrasound was performed. If performed transvaginally, it's more likely than and abdominal ultrasound. I will say, though, that it will be more like 10-12 weeks is more likely to see the fetus, from my lengthy experience.