Confused PLEASE COMMENT

So I found out I was expecting around the 9/15/2014 (9dpo), I was excited but on the 9/22/2014 I began spotting then on the 9/23/14 the 'spotting' started looking more like a period, (red, orange, and brown blood), so I ruled it a chemical pregnacy cried & just moved on. Well today a friend of mine convinced me to take a test just to rule out pregnancy & it was a STRONG positive. Took abt 30 seconds to show up. Now I'm confused, did I have a chemical pregnancy or not? As this happened to anyone?