If I'm trying to gain muscle, am I worse of skipping 2 days in a row, or lifting 2 days in a row?

it sounds like you got some kind of all body schedule going on so if you just started out dont do more than 3 days a week. the first MONTHS are not about gaining as much as getting muscles used to lifting and the weights. after those few months are up you should be getting a schedule which divides ur muscles into groups of 2 or 3 per workout which is when you will be gaining more