Pregnant ?

So I had unprotected sex the day before Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> , I usually start me period around the 14th of each month . I still haven’t started yet & my boobs are sore .... p.s my Periods are never this late & my boobs aren’t ever sore . Is it to early to take a pregnancy test ? Or should a wait a little bit ? Any suggestions on what type of test to get ? Or any advice that would be great too , thanks in advance 💗🥲 .