For the past, lets say, around a week now I have been having unexpected nausea . I could have it then it goes away eventually then comes back at random times. I ve also been having a very strong sense of smell, I tried eating something as little as pizza roles, which is something I like to eat, and the smell was just terrible to me. I tried to ignore it and eat them but one bite and I started gagging. Do you have any ideas what might be wrong?