Welcome to HCM,
In my experience, it is not normal to feel ill after workouts. I suspect the nutritional plan is not adequate for your workouts. May I give some suggestions?
After a stenuous workout, your postmeal should be about 45 minutes later and consist of a balanced meal .Drink up to 1.5 liters of every kg lost during exercise. An electrolyte drink might be good.

Before exercise (1-4 hours prior) take 1-2 gm carbohydrate/kg body weight
Drink 1.5 cups fluid.

5-10 minutes before exercise drink a 15-30 gm carbohydrate fluid replacement (like a sports drink, read the label for how much to drink for the carbohydrate amount)

Sensitive athletes may have to select pre-even low glycemic foods; avoid fructose or juice as fluid replacement. Avoid high fat foods, garlic, onions, green peppers and possibly, bananas (individualized, bothers some, not others)

This is a rapid rendition of eating for the sensitive athlete. If you think you are experiencing low blood sugars, please go to my portal, sign in and we can work out a meal plan for you. Respectfully, Kathryn Shattler, MS,RDN

Hello,
Welcome to HCM and thanks for asking your question.
As you have started a boot camp and doing intense work out, its very common during one week to adjust your body and can lead to nausea, vomiting, weakness, fainting, etc. So don't worry and be relaxed.
You should keep your body hydrated enough to prevent any kind of dehydration. Drink lots of liquid and eat healthy food. It will be alright and your body will be used to it within few days.
Hope this will help and let me know directly if you have any further relevant queries.