Hello

So i am 6 weeks pregnant and just had a baby almost 6 months ago. I have been having cramps some painfull ones it cramps on one side and then the other and then the middle. also been having some bad back pains. Sharp constant back pains. That go to my front half too. Took Tylenol and it didnt help. Been having some light brown discharge when i pee. Just when i wipe. Should i go in or is this normal?