Is there something wrong with me? Pregnancy?

On the 23rd of this month, which was about a week ago, I experienced some brownish blood in my panties which i thought was my cycle. it stopped a couple of hours later so I just thought that it would come back in a couple of days. I wasn't due for my period until yesterday but it didn't come. I've been having some cramping for the past 2 weeks and i still have cramping like my period is coming. My boobs are sore, but I have no other symptoms of pregnancy. I don't think I'm pregnant and I just want to keep waiting on my period to come like I've been doing for the past week. But if it never comes then I don't really know what to do next. Someone please help me!