Weight lifting

Once again I come to seek the wise counsel of the HS board monkeys. Here the situation. I started lifting weights about a year ago, 3 times a week. After the first few month I noticed obvious results. Since then I hadn't gained any mass. I've been lifting more weights than before but the increase in weights I have now is nowhere near my weekly increases a year ago. Also I started jogging after I lift weights so I can loose my swole, is that a good idea? What am I doing wrong?