You need a programme. Not go see see look look follow do do. And you don't play. You don't take dumbells. You train. With purpose. Specific purpose. Npad has state this before, but if you have the mentality of just go in and see what you can do, instead of doing what you have planned, then you will be wasting your time. Eating chips watch TV will feel better.

The ache is DOMS. I get DOMS all the time that I have learned to live with it. When does DOMS starts depends on what I eat, how much I eat.
So to say.
You can drink all your "protein" and yet still feel sore.
My legs day is the most grueling day in a week. I am almost scared to go. And it is today. You have no plans, no target, no direction. Stay home and start reading stickies in LYN BB section before you attempt the training again. It will do you more good than going into the gym and play like a headless chicken.