I'm sorry you're going through all this. I am 5w7d with my first baby. I started spotting when I reached my 5th week. I was dead scared and thought I'd have a miscarriage. I went to my gyna and he said the cervix is closed which is good. For the spotting he put me on crinone gel 8. The first night when I used the gel I started bleeding, very slight flow, but after that not a sign of blood whatsoever Thank God!
I've been reading a lot of articles related to spotting/bleeding in pregnancy and it's pretty normal. 20 to 30 percent women bleed/spot and they delivered healthy babies. The best example I can give you right now is My elder sister. When she was pregnant with her first baby, she also used to spot, and the doctor put her on injections. Now her daughter is 8 years old and healthy.
Be strong and think positive. Everything will turn out great!