Anyone here a Correctional Officer or Police Officer? I have a question?

I'm at a crossroad in my life right now, and I need to make up my mind quick. Right now I am currently signed up to go to college to take a CJS course which will teach me skills to help me become a correctional officer. Now this is something I would really like to do, but a few things are holding me back from committing 3 years of my life to pursuing this goal. Let me first state that I have never been arrested, never charged, never even had a disagreement with a police officer or anything like that. But I have had quite a few encounters with the police. I will explain each one. One time I got caught with a pipe on me when i was probley 16 (I smoked marijuana as a teen), another time I was with a "friend" (not my friend) at the lake, and police officers came over to the car, and saw weed in the my car (not my weed and the guy told the police it wasnt mine) but the guy was on probation for who knows what, so we both got a cautioned. And the the big one, 6 or 7 months ago me and my girlfriend broke up, and we had no contact with each other at first. But then I was suppose to be moving away so I emailed her and asked if I could maybe say goodbye, and apologize to her for how things ended. She didnt answer me so I sent her a few more emails and then a police officer shows up at my door and tells me I need to stop trying to contact her. I explained to the officer that I was not threatening in any way or even upset. I just wanted to say goodbye. I asked the officer if this would effect me getting into the army and he said no, because I wasnt being charged. But then he went on to say that he did have to write a report. I said I understand, thanked the officer for letting me explain myself, and he was on his way. Now the big question is, will all of that disqualify me from becoming a CO? I need to know soon because I have a career opportunity in Saskatchewan that is waiting for me, but I would much rather take the path of corrections. Sorry about the story, but I dont want to go through with all this just to be told no in the end. I am truely a good person with a big heart, and I just want to serve the public some way or another. Thank you very very much for any information you can provide me.