faint positive using oracle fertility preg tests

[1pj]

so i caved and did another test(,i tested on 10 DPO but was negative) so gave up and have been waiting for AF been feeling real sick then no AF on day 28 so did a test yetserday but not first morning urine but still morning with a brand i got off ebay called oracle fertility and i got a faint positive,so i did another one(as you do)and it was also a faint positive so i did another this morning with first morning urine thinking that it should be stronger this time but the lines just as faint even maybe fainter ever so slightly so im confused whats going on anyone else had this?Its definetly lines appreaing just real faint,has anyone used this brand before im wondering if i should wait a few days and test again using first respsonse or a brand i know any thought thanks!!oh and please be honest if you think maybe somethings happened