Water fasting/supplements

I am on day six of a water fast, having previously only gone weekly.

I am quite worried about lack of nutrients as I have been deficient previously.

Before fasting I was taking solgar v 2000 high potency multi, 5000iu of vitamin D, and fish oil. I would also have a lot of green smoothies. I noticed huge improvements with supplementing, in over all health, but especially fertility.

Is there anyway I can continue to take these while fasting?

Do they kick start the digestive system?

I know fish oil has a decent caloric value, I think I was taking about 150 cals worth.

I can handle the feeling sickly if I take them when I am fasting, but am concerned they may be detrimental for the fastings purpose. At the same time, I do not want to suffer deficiencies in the process and end up having to build levels up all over again.