Depo shot and Plan B

Shelbie • I have Crohn`s disease and UC, and those are the reasons why I have a tube hanging out of my nose!
Okay so I'm on the Depo Shot for my birth control, my boyfriend and I don't wear condoms but he always pulls out the best he can.  I didn't see anything on the Internet and didn't know if anybody knew if I could take Plan B One Step while on the depo shot! I'm not sure and need advice!