Hi lovelymel_16,

Thank you for sharing your question with the EmpowHER community.

Anytime you have unprotected sex you increase your risk for pregnancy.  Also, since you are not confident that the withdrawal/pull out method was performed correctly, you could have become pregnant during that event. 

It is important to note that Plan B is less effective if you've already had unprotected sex earlier in your menstrual cycle, as you may already be pregnant.

Was the first event and second event you mentioned on the same day?  

Here is additional infomation to further help:

How to take Plan B

Also, here is information on the withdrawal method of birth control:

Withdrawal Method: Birth Control Kung Fu

I hope this helps.

Be well,

~Gillette