I started my next pills right away
If you have had intercourse then yes there is a chance you could be pregnant.
With birth control pills the "period week" pills are typicall just sugar pills. They don't do anything other than keep you in the habit of taking your pills every day. Not taking that weeks worth of pills shouldn't affect anything as long as you started taking your next pack on time as directed.
This is assuming ortho tricyclen lo is the same as other birth control pills.
If you are concerned about possible pregnancy, wait 2 weeks after the last time you had sexual activity and take a test.