Mommies who have had placenta previa. I am having lot of cramping and pains in my stomach along with back pain and…

Mommies who have had placenta previa. I am having lot of cramping and pains in my stomach along with back pain and pressure. I had a little bit of blood when I wiped but not enough to freak out about and I have been loosing mucus since yesterday not a lot just enough to notice. Should I be going to the ER? I’m not sure what to do. This is all new to me.