 [ Symptoms ] i am not pregnant but i sometimes get morning sickness why is this  i am 23 years old and this happens 1 2 times a month in no particular pattern often when this happens i vomit and when i do it is very intense i thought it was happening on days when i skipped breakfast or had breakfast too early but i have also thrown up on days that i did eat breakfast it is always in the morning between the hours of 10am and 12 pm once a few months ago there were specks of blood in my vomit what is going on [ Disease ] anaerobic bacteria do not need oxygen to grow they are generally associated with periodontal disease