Rose:
Welcome to mamapedia!!
So the doctor's took a blood test and they say it was negative but said you have the Human Growth Hormone in your system that is registering on the blood test? uuumm... you MIGHT be pregnant. 5/25 is considered "equivocal".
Are you TRYING to get pregnant?
Have you taken any hormone shots - chlomid, estrogen, etc.?
Have you had unprotected sex?
Pregnancy symptoms differ from each W.. So I don't know what "feeling" sick and gaining weight is for you. Go BACK TO THE DOCTOR!! Please understand, I'm NOT trying to rude. But we are NOT doctors and even if we were? There is NO WAY anyone would "evaluate" and "diagnose" you over the internet.
If you're trying to get pregnant - congrats!! The HgH is there...while not 100% positive - it's there...
If you aren't trying to get pregnant...I'm sorry. You might have some tough decisions to make.