Post on another page too, but

So i am 4w4d today and the last few days cramping and lower back pain. I feel like my period is about to start no bleeding or anything is that normal?? Am i over analyzing. I did have 2cp in past one 5yrs ago and 8yrs ago. I dont remeber what those were like we are having our 5th baby youngest is 3 and i dont remeber ever feeling like this..