I am 19 I have ovarian cysts and I am trying for a baby. I have taken a home test and It was negative however I am having a very unusual period. its been light pink and almost non existing it was also four days late. I have had a loss of appetite and when I do eat I usually get sick. I have had cramps really bad and I am always tired and my bf says I'm really Moody. My breast have been really ten,der and my back has been sore. do you think I could be pregnant.