HELP PLEASE...

Hi girls, I need your help. I ran out of pills while out of my country and wasn’t able to take it for 5 days (cause of not having a prescription), I usually take 21 day pills but took it straight for 2 months now and not have a period. Is it okay cause that 21 day pills have 7 day allowance for period so can I just go back to 21 days pills now or should I try to get a plan B? They say plan B is horrible (vomiting etc).

I hope this makes sense and thank you in advance for help.

-Kate