Should I take plan B?

Patient: My 4 week pack (last week is sugar pills) started the 15th of this month. I took the second pill 12hrs late and then was a couple hours late the rest of the week on most pills. Then Thursday I took it 3hrs late and Friday on time and now today is satuday and I don’t take it till 9pm but my boyfriend came in me and I want to know if I should go take plan b or if I should be okay. Before that I have taken birth control for 3 years at the same time only missing about 10 pills (meaning taking them late)