I've been having pregnancy symptoms for 4 weeks. I started what I thought was a period 4 days early on May 29th 2017 it lasted 3 days and 1 day of light  pinkish/brown spotting. Still having pregnancy symptoms: Cramping, headaches, lower back pain, sore breast, vomited 3 times in 1 month span, mood swing, loss of appetite but very hungry, very sensitive to smell, chest pains(MAYBE INDIGESTION) AND heart AREA PAIN, also I get very light headed at times. Also my baby keep playing with my stomach she'll lift my shirt up and say I have a fat stomach My fiancé is also having some symptoms messed up stomach, emotional, sensitive to smell......HELP PLEASE!!!! COULD I BE PREGNANT IVE TAKEN LIKE 4 TEST ALL NEGATIVE WHAT SHOULD I DO???? Also could my graves disease be making me have all these symptoms???