4 days late!! HELp me out!!

QueenBritt • Engaged 💍 💑 ds 👱🏾‍♂️that’s 14 and 1 👼🏾 baby and ttc our 🌈👶🏾

4days late took a test Monday BfN 😢 had lower back pain a dull cramps and strange feeling on left side and uterus like area 2 days left of my “af “ and 3 days left in this month should I wait until the 1st of April to test I have never missed af unless I was pregnant have a ds that’s 14 and had a mmc Nov 2017 I just don’t know what to say any suggestions