I haven't started my period yet this month. Earlier this monthafter my last period I had protected sex with my boyfriend but our condom broke. Recently I have been experiencing nausea and some abdominal cramping also feeling very tired and my breasts are swollen and sore. Its already the end of the month and I am thinking I may still have my period, is it possible I may be pregnant or still get my period and it go into the next month?

If you are pregnant, you won't have a period. However, some women do have some spotting or bleeding in early pregnancy causing them to think it is a period. Usually it is different from their norm... often shorter in duration and/or lighter flow.

See what happens when your period is actually due, then give it several extra days if it doesn't show on schedule. Sometimes periods are off, which can be perfectly normal. If still no period about week after it was due, try a pregnancy test.