I tracked my cycle on an app and it reminded me to wait till the missed period date. Testing before that gave me a faint confusing line once. Honestly patience till the missed period saves a lot of stress.
We just started trying and I was so eager to test immediately. But I learnt the hard way it needs time, the early one was negative even though I was pregnant. Waiting for the missed period is best.
My doctor explained that testing right after isnt useful, the hormone takes time to build. She said wait till after a missed period for an accurate result, roughly two weeks or more. Testing too early just gives false negatives.