pregnancy calculation

[margept]

I had my IVF retrieval on 2/4, my transfer on 2/9 and the first day of my last period was 1/18.  I found out I was pregnant yesterday with a blood test (will have another tomorrow).  Do I calculate weeks pregnant from day of last period or from the date of retrieval.  They mentioned that they could do an US at week 5 or 6, which depending on the calculation could be next week or in 3-4 weeks.  Does anyone know how this works?  Thanks so much and blessings to you all

[margept]

Thanks for the link to the website.  It said that I would be 4 weeks and 2 days right now.  Very weird to think about since I just found out, but very exciting.  To StillTrying101:  we transferred 4 embryos on 2/9 and my HCG level on Monday was 202.  50 or above is normal, so I think we may have multiples which is why I want to have that US to find out.  I'll keep you posted, and good luck!

[miky72]

I suggest you check this site:
http://www.ivf-infertility.com/calc_preg.php
congrats!

[StillTrying101]

Congrats!!
I would think you would be counting from the first day of last period.
How many did you transfer> What were your levels?

[Helen72]

I don't know the answer to your question but I just wanted to say CONGRATULATIONS!!!  Enjoy the next 9 months!