You should see a doctor or call the emergency services for
advice.
Everyone reacts differently. If you feel you need help, seek it
from the professionals.
In the United Kingdom, there is a non-emergency number that you
can call for medical advice if you are unsure if your condition is
an emergency or not. If it turns out to be an emergency the
non-emergency line will order you an ambulance. The non-emergency
number in the United Kingdom is 111. The emergency number in the
United kingdom is 999.