Help 3Wk negative testing

it’s telling me I’m 3weeks pregnant today (if I am pregnant) and anyways, are you suppose to test positive at 3wk or is that still too early, I’ve been testing religiously everyday and it’s gotten so unhealthy and expensive. First day of my last period was November 15th. Ovulated November 28th - Dec 5th. Intercourse Nov 22/29/30th and Dec 5th.

My period is suppose to start Dec 16th.

When is the earliest I can start testing because obviously I’m testing too early I think 🥲