Feeling like i never sleep when i get average 8 hrs, weakness, body aches, excessive sweating off and on. someone thought may be thyroid?

Might be: But don't expect to be diagnosed over the internet. You need to see a doctor, undergo a thorough exam after providing a full history, and then have labs drawn. Go soon. This is easily treatable and can cause significant problems if really due to an overactive thyroid.

Drug reaction: You may have a thyroid problem but the drugs you are taking for your allergies may give you the symptoms you describe. Check with your foctor though to rule out thyroid disease.