Please respond

Alexius β€’ πŸ‘ͺπŸ’‘πŸ’πŸ˜˜β€οΈπŸ‘ŒπŸ½πŸ™ŒπŸ½ I have had a miscarriage three months before I became pregnant with my son who is now 1 year old. He was born in May. I'm 21 and also engaged to my son's father after knowing each other for over 2 years.
My discharge is turning brown. I have been cramping off n on and it hurts sometimes. Should I go to the ER and be looked at? Im at work and all tonight i been cramping off n on. Im 5w 6days today.