Could i be pregnant if i dont have my period

Patient: Well i had my period on 9/1/15 now it’s 10/7/15 and i been spotting since the 30th of last month until now i been having light pink and brown bleeding i had a clot when i was using the bathroom but no blood and the bleeding has coming and going i don’t know whats going on

Symptoms: Feeling like i’m going to have my period…mostly sleepy..lower belly hurts sometime’s