People take birth control for a number of reasons. You can certainly use them to suppress/skip periods. However, it's not quite as simple as taking birth control the month of a particular event (e.g. a vacation) to skip the period, nor do you 'push back' a single period and have it later. Instead, it may take a while for birth control to completely regulate your bleeding in whatever way -- be that having it happen at a regular time, or skipping it entirely -- so going on and off birth control for particular events or to wait a few additional weeks for a single period wouldn't be effective in the way that having a regular, sustained birth control regimen would.
Waiting 14 days after a particular sexual act to test for pregnancy is recommended, so 2-3 weeks should be a good window. We have more information on this in our article Peeing on a Stick: All About Pregnancy Tests
On the whole, available birth control methods have been vetted extensively and are safe for your body
. However, if you are able to talk to a physician via a telehealth visit at this time, it is best to consult with a medical professional about how starting and stopping any medication may affect your body.
I hope you'll indulge me a question in return! It seems like this whole process -- considering starting/stopping birth control, pregnancy risk, periods -- is causing you a lot of anxiety even now, when you are just considering it. For me, that is a reason to pause and consider this a bit more deeply. You've said that you want to "give your body a break" from the pill -- could you elaborate? What would you be giving your body a break from, exactly? Is there another way we can support your body's wellness, outside of stopping and starting your medication?