Hi Dr. Please Help Me. I Am A Mareed Woman.

Hi dr. Please help me. I am a mareed woman. I don't have a child. Earlier had tubal ectopic pregnancy& it was removed.that's my right side tube. I still hopes for child. This time my periods was missed.deu date is 21st.my problem is from day before yesterday up to now i have sever back pain. Started from prlvic area. It was incrres today left& right back side.