Hi there ~
I understand your concerns. I am sorry to hear about the intense stomach pain diarrhea
and weakness with vomiting
. All these can take a toll on your mental health. I think you are having a bout of viral infection and the treatment would be to take rest, properly hydrate yourself and adequately use nutritious food to help with the healing process. I hope you also consult a doctor to find out if there is anything endemic going on in your area.
I hope this helps. Take care and have a lovely day!