Hey,
How you doing?Sounds to me like you have run into what is known as DOMS(Delayed onset muscle soreness).This is generally caused by to much exercise after a layoff.You should always start out lightly after a layoff and from what you said,you more than likely over did it.I know what it is like,you've been off for awhile and really want to get back into it,but then we all have to pay the price.You can use a variety of ointmants to help out with the muscle soreness,like ben-gay,icy-hot or one of those types of rubs and make sure to keep your muscles warm after your workouts.
Your Brother in the Arts