Talk to Gynecologist on Gynae Related (Emergency Pill + Periods)

Hello, hope you will be fine.

My friend has periods exactly 2 months ago on 18 November 2023 then she had unprotected sex with fiance on 3rd December and taken emergency pill on the same day I.e 3 December.

She started bleeding on 9 December and lasted upto 18 December. There she was confused whether this was her period blood or bleeding from emergency pill.

So she waited for some time and taken two hCG tests around 30 December and early days of January but she got negative results.

Now, it's been 1 month (if the bleeding from 9 to 18 December was period) that she didn't get her periods... she is in panic and don't know what to do.

Please guide what she should do now??????????

P.S. she can't go to hospital to see a doctor, she is restricted at home.