Botox, unusual side effects. What can I do?

Your treatment dose of Botox is on the higher side, but not unusual. Botox in typical cosmetic treatment doses does not cause systemic effects like you are describing. 

I appreciate your concern. The bruising is likely due to your Botox injections, which is very common. About 5-10% of patients also experience a headache after Botox injections, which is most likely due to the injections by the needle. While is if unlikely that the dizziness and fatigue can be attributed to your treatment, I would recommend scheduling a follow-up with the doctor that performed your treatment, who should be able to put your worries to rest.