I have the bar implant in for 2 years and 2 months. I had a period this month on the 10th to the 15th. I and my partner had sex using a condom on the 19th but it split. I went and got the morning after pill on the 20th just in case. Not on any medications. What are the chances I am pregnant and the bar failed? Please help worried and confused

Advice greatly appriachated. Chemist said it should have worked