Ugh I Dont Want To Lose Faith ?

Im A Young Girl , Im (19) And My Boyfriend And I Been Trying To Have A Baby, But It Doesnt Happen ?. I Have Been Going To The Doctor and They Say They I CAN HAVE BABY ? , That Everything Is Normal With Me. But I Honestly Dont Fine My Self Normal. My Boyfriend And I Been Trying Almost 2 Year, UnProtected , Drinking Victims (Nature Made Preg Multi +Dha ). And This Year I Only Had 2 Periods, March 14 ,2014 And Aug 7 , 2014 That It . I Dont Know What To Do . I Used To Drink Birth Control (Pills) For 2 years (15-17) And i Think Drinking Those Pills Made Ny circle Change. I Having Sure Boobs When I Wake , I Randomly Get Hungry And We I Go To Eat I Only Eat A lil , if i dont eat i get nauseous , and during the middle of the i have to wake get some water. I Think Dont Is A Signs of pregnancy Cause . Idk What To Think, & Dr Said Im Fine.