Help! first time TTC for baby #1

I have been TTC for 3 months now and I am 5 days late. Just took a pregnancy test and it was negative. Did I take it too early or it just means I’m too stressed? Please give me tips and throw baby dust 🀞🏽🀞🏽🀞🏽 also if you guys know really good baby stuffs to buy beforehand, let me know.