Please read!! Need advice & opinions!!! Very lost!!

Ashton

Okay hi guys!! I'm Ashton & I'm 19 years old! I have a serious question!!

My last period ended on the 16th of July (I think)

I had sex on July 22nd

Took a PlanB on July 24th

I had sex on the July 31st

No protection/contraceptive for that

(Just withdrew)

No period still

I had sex again on August 22nd

Took a PlanB on August 24th

Still no period.

Is the reason I haven't gotten my period is bc I've taken two PlanB's a month apart?