Nervous wreck

Samantha • Expecting baby #1 March 2016 --
I'm so scared I can literally cry I been bleeding for a week but not bright red blood more like brown blood I read that can be "implantation bleeding" so I took a test on a whim and one line is very bright and the other very faint . I was having what I thought to be cramps so I have been taking lots of pain killers now I'm scared that I may be pregnant 😭