Is this normal orrr?

I recently got put on lithium for suspected bipolar, buttt I don’t really like how I feel after only a few days. Today is day 4, I think? I have a really bad headache for 8 hours, really cold, stomach aches, and nausea. But I know it hasn’t been a full 2 weeks yet, so I didn’t know if that is normal for adjustment ?

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