Pregnancy test

Hello everyone! My husband and I have been trying to get pregnant for only a month now. I know that some pregnancy tests state they can catch HCG levels as soon as 6 days before a missed period, but how accurate are those tests? Is it best to wait until a missed period to take a test?

I took a test 2 days ago, (4 days before period is suppose to start, I'm way too anxious and couldn't wait for a potentially missed period), and it came back negative. I know we have not been trying for very long and the test could be accurate, but I just wanted to get some feelers on how soon is too soon to test.

Thank you in advance!