Anyone ever had a early early positive!?

Found out 15 days from the day my period ended. I got faint lines exactly 14 days. Then on day 15 positive digitals too. How did I find out so soon?! (My period lasted 9 days, first time we had sex was also cd 9) I’m literally shocked and over the moon. All my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period apps</a> were 10-8 days away. I just woke up Sunday saying I’d test cause idk it felt weird. That night, not even fmu I got 5 faint lines…. I’m so anxious since I’m not even due for my period! Then Monday I took more tests and digitals all positive, then Tuesday got a way darker line. Just wanted to ask if anyone have any similar situations cause I’m so confused. Seeing a doctor Monday but still excited, anxious and shook.