YOUR KIDDING?!?!?!

I woke up Friday dizzy... And thought to myself I've only ever woken up dizzy when I have been pregnant. I put the thought out of my mind. How could that be?! We tried for 3 years and on treatments and accomplished two pregnancies one we lost and the other we lost a twin. Now all of a sudden I am just pregnant out of nowhere??? I can't be excited ...if I get excited I will lose the baby... I shouldn't even call it a baby yet... sh*t I am already attached to my little fuzzy walnut baby in there. I tested in the afternoon faint faint positive. I woke up Saturday morning and peed in a cup then snuck out "to the bank" (cough dollar tree) and tested in their parking lot LOL. Faint positive. Stopped at hannaford got expensive test... Brighter positive then dollar tree. I get home and grab my beautiful son out of my husbands arms as he asks me where I have been. I say we have a secret and we are not sure we want to share it... He says what? I say Jack is going to be a big brother!! He and I are both in shock that we concieved naturally and scared at the same time that it won't last. I have not found out a specific reason for my losses or preterm labor so there is no precautions I can take... I am helpless.