I missed three days of my oral birth control- should i just start with one pill today and discard the first three days or should i just treat today as day one

Hi beccaboo,
Thanks for your question. Here is an advocacy sheet I wrote recently about missed birth control, hope it helps:
https://www.empowher.com/sexual-well-being/content/oops-missed-birth-control-pill-advocacy-sheet
If you're having trouble remembering to take your birth control, try taking it at a particular time of the day when you can associate it with something you always do at that time, such as brushing your teeth, or when you go to bed. If that doesn't work, you may want to discuss finding a different type of birth control that may work better for you. Birth control is only as effective as how effectively you use it.
Good luck and let us know how you're doing.