Very strong pregnancy test result line 3 days before missed period

Decided to test early on Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, 3 days before my period was due and had a very strong positive results line, despite testing in the afternoon as well when the instructions said to test first thing in the morning if testing early. Do we think potentially twins?! Even though they dont run in our family. Going to feel like such a long wait until the scan!!