MISSED CYCLE

NOELIA • My husband and I have been wanting to have a baby since we first met and recently a few months ago we decided to try we are happy to know we are expecting and truly hoping for a baby girl.
Last month meaning last cycle April 18th I was late by 1 week which I never in my entire life had I ever been late... did pregnancy test came back negative... was suppose to get my period may 20th and still haven't started to feel breast tenderness a couple days but that's all should I worry and take a test? ??