I was on a pill but i stopped because we are trying to have a baby

Please I want to know.I was on pill but i stop because we trying to have a baby, but i had my period only one day medium flow then drop for the sec day and the third day in the morning only the thing is I feel nausea and the taste of food is not the same .I also Moody and tired especially around 12:00 am .Iam I pregnant.