Scared/Happy

Hi girls.... i guess ill just say whats been happening and then any advice would be great!.....well im supposed to start my period from the 11th of this month....but then on the 4th i had some light bleeding when i wiped*sry tmi* so i put in a tampon just thinking i started my period...but i thought that was so weird becuase ive never been early, i took it out the next morning tho and there was hardly anything on it so i left it out and ever since then i haven't had any spotting or anything at all even when i use the rr...i looked it up and it could have been implantation bleeding?? does that sound like it could be?? Me and my bf aren't exactly trying to concieve....but saying that we never use protection except the pull out, and we do have sex quite alot. And he came in me accidently a week or so prior to the 4th.....okay so i took a test on the 11th and it was neg...still no period tho. So does that mean im most likely not, and if im not does any1 know what that bleeding could have been? And its also weird cause i was so scared and not excited at all to be pregnant but when i took the test like i was disappointed and now im kinda hoping i am and my bf is hoping the same....sry so long! but again any advice would be awesome