hi I'm 16 and I was wondering I have not yet missed a period but i noticed that when I went the to the restroom I had brown discharge so I put a tampon in because I thought it was the beginning of my period that was due next week but anyway....I had a little bit of  brown blood then I had a little drop of blood so I put on a pad just to really see and when I look in the pad there was some dark blood and  then a tiny little Blood clot so I changed my pad went to the rest Room again just to check and there was nothing else in my pad I wiped and there was kinda like a light blood not like my regular period and I dropped just one little Blood clot but nothing in my pad and I'm having back pains lower back pains nothing really like my period can you help me.?