Can I be pregnant????

I have been having irregular period....July 6-10 then again 30-3 during august but after that nothing.....then after many weeks late if finally came September 8-12 and jump to this month I was suspoed to get it 10-14 but nothing yet advice please and each time it came full heavy bleeding and pms and cramping and yes I am constantly stressed about it my and him use condoms for a while we would and wouldn't use them but since the last scare it basically no glove no love an he say he had never busted inside me so please help and thank you