The days in birth control pills are not interchangeable.
If you have missed that many pills, do not have unprotected sex. After taking your next pill wait at least 7 days before having sex unprotected.
Its possible but pretty unlikely. If you miss any pills then follow the instructions (which are normally to continue as if you hadn't missed any pills).
Yes, normally birth control pills will reduce the number of days of bleeding.
you should be having a full period if you miss more than three days
If you miss 2 days in a row, you should discontinue use of the pack and contact your doctor. You will have to do the Sunday start or a new cycle start to make the birth control work effectively.
When do you start a new pack of birth control pills if you stopped in the middle of the previous pack and missed 3 pills then started period?
Yes.
You may ovulate straight away or you may not ovulate forseven days. You need to continue taking your pills as normal and you will also need to use a backup method of protection for seven days because you missed pills.
You can switch birth control pills at any time in your cycle as long as you take an active pill on the assigned days.
No, you should use a back up method like abstinence or condoms until you've been on the pill for seven consecutive days. Consider talking with your health care provider about birth control options that don't require you to remember something daily.
Yes it can, but not for long. Birth control pills have hormones in them. Also after quitting birth control pills/patches you have a higher risk of getting pregnant!