Constant negative test

Hi I'm looking for some advice I am TTC for my second child and just keep getting disappointed with the negative test results I know when I'm ovulating and have sex during my fertility week. Don't want to keep getting my hopes up but with my first I knew something was different before I got a positive result and now because I know what to expect I don't know if I'm over thinking and it's all just sycological or if I am actually pregnant but ever test I do comes back negative. Can people please give me some advice