Got tdap and hep a/b combo shots on fri. i'm still weak especially in my arms, tired and lightheaded. is this from a shot? will it go away? when?

Shots cause paine: It's great you are up to date on your immunizations. If you have that many shots at once, it is completely normal to have soreness/pain/and some viral prodrome. It should get less over the first week, and be completely gone by week 2. If you have dramatic worsening, then please visit your primary care physician for thorough testing.

Not uncommon: Not uncommon to feel some degree of weakness, dizziness, or other symptoms (sometimes described as flu like) whenever receiving vaccination shots. Treatment ranges from agents such as over the counter analgesics to warm/cold compresses, hot/cold showers, to rest, fluids, or believe it or not, exercise. You should consult with the provider who gave you the shots for more input on your situation.