I am 29 and have been married for a few months and trying to get pregnant. I have always had irregular periods in the past, meaning they are delayed and have skipped sometimes. i even have experienced prolonged bleeing in brown color or the flow has been little. but on average, i do have my periods almost every month, even though they are delayed. This time I skipped in May, but had them in june and july. In july they went on for 21 days but the bleeding was less. The ended on 31st July and now i noticed a little bleeding twice (pink and brown) for the past two days. during this one week my husband and i had sex 4 times. is it possible that during this one week i have become pregnant? or is it something else? i am worried. please help me.