Hello, I'm a bit nervous.

 

I started taking brthcontrol in the end of July, my doctor told me i could take it that night, that I didn't have to wait for my period because it had already happened that month. Well August I had a normal heavy period, the week before the sugar pills. This month I haven't had a period. I spotted for a week straight about 2 weeks ago and then yesterday I started spotting again. But its mostly a brown color with the occasional red. Not a lot of it either. My question is, do you think its just my body getting used to the birthcontrol? Or is there someway I could be pregnant? My boyfriend and I are usually pretty careful; either a condom is involved or he pulls out ( I know it's not that safe). I'm just terrfied as of this moment. My body hasn't been acting very different except for a pretty bad cold about 2 weeks ago, and a little nausea, but I thought it was all in my head, I tend to over think things and sometimes I get naseous when I have colds. 

 

I really appreciate anybody who can help me out. Thanks!