Am I pregnant

by Esita
(Hamilton, Ontario, Canada)

My period is almost regular, but after 6-8 months sometime it changes the date.

In this month, during sex, me and my husband were very careful as before. Normally 1-2 days before my date of period we do not use protection and this month we did the same. But my period did not occur in this month.

I am very tensed about this matter. I do not feel any tiredness or vomiting and there is little pain in my breast as like as it happens before period. Is there any chance for me to become pregnant?

Please send the answer.