Took pregnancy test and still negative even after using preseed😿

My hubby and I have been trying to get pregnant for 8 months now and NOTHING!!! It makes me so frustrated, this time used preseed and nothing !!! Nothing !!! Ughhhhh !!! I took the first response pregnancy test that worked for my first child so I keep using them to checked thinking since I usted preseed i would get pregnant and nothing ..... I’m just getting tired of trying 😩😭😭 i mean I didn’t pee much but I think I peed enough could that have been a problem??????? Anyone know if that could have been the problem , that I didn’t pee enough?