Replying to Working out after stopping

Alright so last year I used to work out a lot because it was one of my classes, personal fitness. I got lazy over the summer and stopped. I noticed the other day (and after my jeans ripped) that I've been gaining a lot of weight and I really want to get back in shape. I'm going to make a committment to go swimming more (I can go for free at my work) and start lifting weights again. I did the weights for the first time in 7 months. I have never experienced so much pain from working out in my life. It didn't hurt nearly this much when I started last year. Just wondering is it normal to hurt this much if you stopped working out for a while then picked it up again? Like hurt more than your first time?