Good evening.  I just want to ask a question.  If how possible I can be pregnant? I'm  using a lady pills for 2 years now  and just this month (january 2018) I switch to althea pills. On January  14 this year  I've had my menstruation  starts and ends January  18. By January 20 I bought althea pills and took my first pill that  day but  I have sexual intercourse with my hubby that  day.  I just want to know how possible I am to get pregnant since I'm  not taking my pills for 7 days before I've had sex.