Maintaining but!!!!!

I am maintaining my weight of 126-130 lbs. with out any problems but the problem is I'm getting bigger. My small tops are getting to small. I have been lifting weights 5-6 days a week since Feb. and have increased the weights and repetitions. And before anyone says anything I use a weight machine and it works for me. Now I need to decide whether to quit lifting weights or at least cut back. I really do enjoy it and It has been beneficial. I just don't know whether I want to get any bulkier. I have adjusted my diet for weight lifting increasing my protein and carbs so will I have to adjust again if I quit lifting.