Let me just first say yes I am sexually active we do use condoms and not on birth control yes there are time when we done use it but for the majority we do and lately we been using them every time......so I have and irregular period it started happening in July (I'm 18 and had my period since I was 12( on July I got it 6-10 as usually and then again 30-8 and nothing for August an no it was not spotting it was heavy...then it came in September 8-12 it was late but again not spotting it was a full period so now in October I was suspsosed to get it 10-14 but nothing had came....can I be pregnant or what is going on...I know none of u are doctors but need advice thank you so much