Different PT results

I'm TTC. last Tuesday naisipan ko lng mgPT around 4pm. gulat ako it's positive. Dahil may stock ako ng PT, ngtry ulit ako around 4am, still positive. Yesterday ngPT ulit ako bandang 5pm and 4am, one line na Lang. May nka experience na sainyo nun? Paasa. Haha By the way, ung 2PT na positive is same brand from TGP, the other 2PT na negative from other pharmacy, brand is Partners.