Ok so i didnt have my period all month till the last week of the month but its diffrent from all my othere periods its lighter then usual and had lasted three almost four days an has been the same constant medium flow just at times like spots durring the day also ive had various pregntantcy symtomes, sleepyness light headed, sore and sensitive nipples, an mood swings.... Could i be pregnant? Ive been having unprotected sex all that month btw?