HPTs during 2WW

I was crazy and took a few HPT's.  My doc implanted 2 textbook perfect embryo's on May 17th (3 day).  I took 2 pregnancy tests last week knowing if they were positive that it could be from the HCG shot I took the evening of the 12th.  Yesterday I had a negative HPT and this morning its back to positive.  Any thoughts?  Would it go neg and then pos if the HCG was still in my system?

[sjsmiling]

HCG stay in your body for up to 14 days.  The two HPT from last week may have read positive due to the HCG.  The one this morning may be a true reading.  Hold tight and test again in a few days. I did a HPT 12 days after HCG and it read negative.  I tried again two days later and it read positive.  Knowing that I had a good chance of the HCG being out of system.  It was a true positive confirmed by RE.  I wish you all the best!  Hope to read about your positive beta in a few days! :)

[mommyagain123]

it could be neg at night and then positive in the morning becuase of a higher concentration of hcg in the morning

[anotherwaiting]

I take my HPT's in the morning 1st thing so I can get the most accurate reading.  A friend talked me into taking one at lunch today and it's still positive.  

[Brody641]

sounds like a definite positive to me!!  the negative shows that the HCG was out of your system, so a false positive at this stage seems unlikely!

[cindy414]

I agree with previous poster.. If you see HPT turn neg than more than likely trigger is out of ur system --therfore you BFP is  the real thing!!!

My trigger shot only takes 7 days to get out. Alot of depends of your body weight and how fast things get absorbed. Hope ur BFP stays for 9 months. Please keep us posted! :)

[anotherwaiting]

Thank you all so much for your words of encouragement.  This has been quite a ride.

[anotherwaiting]

Well I found out Friday that it truly was a BFP.  They wanted my HCG level to be around 75 and it came back 145 so they know it's a healthy pregnancy and I go back in on the 14th to see if it's multiples.  Didnt think I'd get pregnant much less possibly have twins.  I'm a bit overwhelmed thinking about it.