9 weeks brown spotting?!?

Gabriela • First time mom. 23. Due 06.26.17
I am 9 weeks pregnant, and I have been spotting since the very beginning of the pregnancy. And the doctor told me that since it was brown blood/not much that it was fine. It did go away, but now it came back this morning, and I am having lower back pain. I don't want to call the doctor yet if it is not significant and red but I still worry. I do have an appointment next Monday for my 10 weeks. I did have a miscarriage before but it happened soon after I found out I was pregnant. So this is my first pregnancy that has lasted this long. I really hope I don't have a miscarriage. I've wanted this for so long. 
Can someone tell me if they have experienced this, and went to have a normal pregnancy??
Thanks 🙏 

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