AF is 4 days late

Rose • Due in 07/25/2021😍😍😍🤩🤩👶🏻👶🏻💫💫💫🌔✨✨✨✨✨✨✨

So from the beginning for this year I had irregular cycles but af comes and I am 4 days late again. My boobs are very very sore from last week and half and I have backache sometimes and stomach cramps. I did throw up in morning today. Is it sign that I might be pregnant? Should I take test?