25 mcg levothyroxine is it normal to have fatigue, dry skin, muscle aching and weakness, depression, insomnia when on this medication for hypothyroi?

Hypothyroidism. The symptoms you have are more compatible with hypothyroid state. You are on the lowest dose yet and likely your doctor is adjusting it, just can't give a very high dose right away. It takes a few weeks to adjust each level so as not to get side effects. Talk to your doctor for reassurance.