I Have Always Enggaged With Safe Sex. But Though Recently

i have always enggaged with safe sex. but though recently i came to know that ex was HIV positive. we were together in 2010 i had tested negative by rapid card in 2011. then after recently when i came to know then i repeated card test one of them was Tridot. the result is negative. should i go for any other test or the result of tridot is conclusive that im HIV negative.. pls reply im tense and worried