What Do Mood Swings And Irregular Periods While Tubes Being Tied Suggest?

could i be pregnant i have very bad mood swings my stomach is getting big no were else i crave crazy things i dont even like normally my periods have been comeing two weeks early or two weeks late for the last 4 months and last month it was late and very light and only for three days which is not normal at all i had my tubes just tied 11 yrs ago could i be pregnant