Your dr will tell you when. Mine said I was clear for everything at 3 weeks. I didn't have sex til 7 weeks and a PP period until 8 weeks. I used tampons and was just fine.
I didn't use them with my first PP period (almost 5 weeks PP) mostly because I didn't have any. When my next period comes I will be using them. I am so done with pads!
Re: tampons