Plan b

Ok so I really need advice because I can’t go to the doctor I have no insurance at the moment but I took plan b and yea I did the normal and bled the brown stuff like plan b says it will and it went away but it’s time for my next period and I haven’t started I took a test after the day I missed it it’s negative I’m not worried I’m pregnant I’m just worried somethings wrong down there please someone give me some good news like this is normal and if you’ve used plan b before when did you get ur period Ik everyone’s different but anything helps!!