Yep Its normal.
This happens when you push too hard, too fast and is most common in people who are just beginning a workout program and overdo it on the first few trips to the gym. The symptoms are the same as in normal, post-workout soreness but with the addition of tenderness in the area of the strained muscle and painful tightness which may limit your range of motion.
Treatment
If the pain is severe, see your doctor. If it’s tolerable, try not to use the muscle and each day you should notice an increased range of non-painful motion. Stretching *may* help depending on the extent of the strain. If the soreness turns into pain as you stretch, stop and just give that muscle some time to heal. Anti inflammatory medication such as ibuprophen can lessen the immediate pain, but may also lessen your muscle gain.
My thighs are stiff from doing lunges with 8lb weights last night. Thats why your supposed to alternate work outs, upper/lower/cardio/yoga.... I will prob just do some walking today since its hard to even sit down lol. It should pass in a day or so. Sometimes 2 if you really hurt your muscles..