Scared I might not be pregnant

Ellen
Hi has anyone else experienced breast tenderness 9 days after ovulation and then 2 weeks later when you are supposed to have a period you don't have it and the tenderness has gone away but still getting heartburn and headaches and nausea when I fix anything to eat and then meat is the worst I can't stand cooking any meat because of the smell. Please help me to under stand what is going on I also have been cramping so lightly you can hardly feel it