[Coffee.]

Your risk is low. Pregnancy is not impossible as any opportunity for sperm to reach an egg makes pregnancy possible However, I don't want to sit here scaring you into thinking your chances are through the roof. They're not. Your period can easily be delayed right now due to your anxiety. However, I would take a test, and if pregnancy is something you are incredibly worried about and do not want to happen at this time, I would highly recommend getting on a birth control method to make activities like this (and potentially intercourse) less anxious for you.

A double method (as the previous user stated) is a great way to protect yourself! Highly effective methods are also a good choice, such as the IUD or implant, as they offer a very high level of protection often not seen by other methods.