4 days late!! HELP ME OUT

QueenBritt β€’ Engaged πŸ’ πŸ’‘ ds πŸ‘±πŸΎβ€β™‚οΈthat’s 14 and 1 πŸ‘ΌπŸΎ baby and ttc our πŸŒˆπŸ‘ΆπŸΎ

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 β€œaf β€œ 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?!?!