Never
Smoking is never safe; it is always a health risk.
It's fine to start the next cycle of the birth control patch early. It does not increase your risk of pregnancy; in fact, it may decrease the risk.
If you have been wearing a nicotine patch . . . why would you want to go back to smoking?!
The birth control patch is a combined hormonal birth control method. Instead of taking a pill, you apply a patch to the skin. The medication is absorbed by the skin, and you change the patch once a week for three weeks. On the fourth week, you wear no patch and have a withdrawal bleed, similar to a period. The next week, you start the cycle again. The effectiveness is comparable to the birth control pill, except that it's harder to make mistakes since the patient needs to do something weekly instead of daily.
If you've been off the birth control patch for five months, you no longer have protection against pregnancy. If you want to conceive, start taking a prenatal vitamin with folic acid. If not, see about starting another method.
It depends on what birth control you're on. You need to take remove the patch and the nuvaring, but if you're on the pill, have an IUD or implanon, or take the shots, your period will regulate itself.
There is no special regimen for "leveling off" the hormones in your body. If your periods were regular before you started the patch, you will likely ovulate two to four weeks after stopping the patch, and then will have your period four to six weeks after stopping.
put the patch on the Sunday after you start your period
Yes, if you start the birth control patch mid-cycle, your period will be a bit later than you expected.
Don't start in the first place.
It's convenient to start the birth control pill, patch, ring, injection, IUD, or implant on the day your period starts, as you then have immediate protection; however, it's not strictly necessary. If you're talking about taking birth control after you've been on it a while, you should take your birth control as scheduled regardless of vaginal bleeding.
You can start your birth control the Sunday after your period.
WHEN TO START If this is the first time you are using ORTHO EVRA, wait until the day you get your menstrual period. The day you apply your patch will be Day 1. Your "Patch Change Day" will be on this day every week. You may choose a "First Day Start" or a "Sunday Start" as defined below: First Day Start: Apply your first patch during the first 24 hours of your period, which will be considered your "Patch Change Day." If the Patch is not applied within the first 24 hours of your period, you must use back-up contraception, such as a condom, spermicide or a diaphragm, for the first week of patch use. Sunday Start: Apply your first patch on the first Sunday after your menstrual period starts