It depends. If it didnt hurt or cause you too bleed when you lost your virginity you can have sex again as soon as you want. However, if your sore or your bleed the first time, they recommend to wait a week to give your body time to heal itself before you go at it again.
That's up to you, but be careful who you have sex with. Multiple different partners can cause a lot of headache and many other things you would not want to deal with. Be safe!
You don't *have* to wait any length of time, but if you are feeling tender, you might want to give it a few days.