Faint Positive tests and then negative tests
Here is my situation.
First of all, you should know that I'm on Metformin because I have very irregular periods and am borderline PCOS.
Now for the tests. The first day of my last period was Oct 21st. This is not uncommon for me to be this late, but I took a test anyway to see if I was pregnant. Here are the results and brands in order.
Thursday Dec 14th ~ evening ~ equate +/- ~the pink that goes across the test took a while to go across and for a split second, I thought that I seen a faint vertical line and a faint horizontal line. However 4-5 minutes later when the control line finally appeared, there were NO lines in the results window.
Monday Dec 18th ~ first morning pee ~ took 2nd equate test in box ~ After urinating on the stick, I sat the test flat on the counter and started to wash my hands. I no more put soap on my hands and seen a very faint, but distinct plus sign. I called my fiancé into the room and he also seen the plus sign but was not convinced. He wanted to wait until we took another test. I showed it to several of my friends and coworkers and they too seen the plus (although) very faint. (Therefore, I wasn't imagining the plus.)
Monday evening ~ One Step Pregnancy ~ took test and no line showed up in the control window.
Tuesday Dec 19th ~ first morning pee ~ took 2nd One Step Pregnancy test ~ again, no line showed up in control window.
On the way to work, I stopped by Walmart and picked up another Equate test and ClearBlue Easy Digital. When I got to work, I peed in a cup this time and held the sticks in the urine for the time that it said and both came back negative and not pregnant.
So, my question is... with both of the last two being negative, should I just believe those and not worry about it, or because I had the one positive, should I keep testing? I'm so confused and just want to know for sure.