pregnancy test dilemmas!

Lola • 21, 3 losses, positive test on 9/2/18, ultrasound on 14/2 - measured at around 6 weeks, praying for a heartbeat next week.
How soon did any of you ladies start testing? This is my first planned pregnancy and have 14 days until my next expected period- I know it's wayy to early now but wanting to know how soon some of you ladies tested and if so has anyone had and false negatives due to testing to early?
Also merry Christmas and happy new year xxx