Birth Control, which is better?

Which would you recommend, the pill or the shot?
For example, I've been scared to take the pill because you always have to take it on time and I can get a little distracted and I'm afraid I'll miss one day and it'll get me pregnant, so I've been thinking of te shot cause you take it once and your good for the month. I mean, according to personality, which works for you?
It's my first time taking any birth control, my appointment is for this week and I just need some advice and opinions. 
PS. I'm 23, and I'm 260lbs, I'm so afraid of gaining more weight with birth control but wouldn't want to have sex for the first time with a condom.