Ok, try to relax. Not all ept are equal. Each brand will test positive at a different level of hcg. You can do a search through google, I once found a really cool sire that compared each brand. I buy super cheap ones from on-line. They will test positive at 20 hcg though, thats the most sensative. Most brands won't test positive until 50 hcg or even 100. So, if you tested with 2 different brands, you very well could get 2 different results this early. Also, diluted urine would make a BIG difference this early. Because the levels are so low the more diluted they are from drinking water etc, the more chances of getting a false negative. Very rarely, like almost never, do you get a false positive unless you have left over hcg from a previous pregnancy, which is not your case at all.
I will tell you the last time I was pregnant, I tested at 4 am and I stood in the kitchen holding the stick up to the light and stared at it forever trying to decide if I saw a second line or not!! I finally woke up hubby and made him get up to look. There was a second line for sure but it was very faint. I had a blood test 2 days later to confirm it.
You need to find out at what hcg level your tests are good for. If it doesn't say that on the box type the brand into google and search it. Also, this early, you really should only use first morning pee because it will be the most concentrated!! Try to relax today (impossible, I know ) and retest tomorrow am.
-------------------- Taking it one day at a time.....