Hello, my name is***** thank you for your question. I am a qualified MD with 18 years’ experience and I am happy to work with you on this.
I can appreciate your concerns regarding this issue.
Since the expiry date was long past, there is a possibility that you were not fully protected while on this pack.
But some protection will still be there because in general pill expiration dates are generally kept quite short even when there is still a lot of effectiveness.
Also, the pull out method was also used.
You have to wait for the due date of your period to see if there was any pregnancy, but you need not get worried about this, chances are good that you were still protected.
You should use condoms for the first 5 days after starting the new pack.
Hope I have been able to clarify the situation for you and helped in resolving your query.
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If you need more help, please let me know so l can continue to assist you.
Thank you and I wish you the best of health - stay safe!
Dr. P. Jyoti