Hello, I Had A 4 Relationship , When I Get

Hello, I had a 4 relationship , when I get married i took a HIV Test and Comeback negativ, that was 6 months after mY ex relationship, and when I was pregnnent I made also HIV Test , with my Second Child also is negativ, is that conclusive after my ex realtionship , am i too Late HIV Test made , thx sorry for my english