Big fat positive after taking plan b

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I was not trying to get pregnant any time soon , but I guess it was to happen , my grampa just passed away this Monday and I found out I was pregnant Sunday night…I slept with my husband 2 weeks ago and we both not trying to have a baby bcz we already have a 3 year old an 1 year old , which he is a hand full … so I took plan B … and I guess grampa have bigger plans for me lol …. I just feel I am not ready , My 1 yo is sooooo bad , he cry all the time , he want me to hold hold him all the time , I honestly don’t know how to feel 😩