Congratulations, I'm glad it's working for you.
Chelating affects everybody differently, so it's hard to say what exactly normal side effects are but what you're feeling is not unusual.
It's also not unusual for people to feel bad for a period of time after chelating since your body is still expelling the mercury during that time.
You can experiment with higher doses and more frequent rounds if you feel your body can handle it. Though I would suggest you see how you feel after a few rounds of what you're doing before you begin experimenting.