Hi,
I understand your query.
Plan B is effective when it is taken 72 hours after unprotected sex.
( Earlier it is taken, more sure is the action).- It is effective for any number of sexes within it's action time.because it acts by postponing ovulation/ not allowing sperm entry in female genitals to allow fertilization.
I think you should not be tense , you will be protected for all three sexes you refer to. Only thing is as you have taken 2 doses of plan B, you are likely to get
hormonal disturbance & delayed period this time-
* So wait for period patiently,- If delay is more than 10 days, you should exclude
pregnancy by urine pregnancy test & get your doubt cleared.
* Plan B has high hormonal content. It is not to be used as
contraceptive on routine basis. When you take it once in month, it better to use barrier method
contraception in remaining days rather than repeat the hormones repeatedly.
* In case you plan to have regular sex, better option is using monthly cyclical hormones ( Oral contraceptives.)
Thanks.