Suggest Treatment For Irregular Periods

Hi , so on april 30th i got my period , it ended on may 17 or 18th i had it for 17-18 days but it wasnt normal it started with nothing on my tampon but spots and it was like that the whole time , but i havent had it since then and i got sick in the beggining of june and the hospital did a blood pregnancy test but it was negative , so i still havent got my period all my test results were good , nothing wrong with me , well its now july still no period , and today ive been having this milky taste on my tounge, my boobs have been really veiny , and idk i just dont feel like myself im way past extremly tired its crazy i could sleep all day if i could, and to top it off i dont believe i can get pregnant cause me and my bf have been tryng for 2yrs and nothing but he has 3 kids . . . Idk whats wrong or what to do . . Help -_- please cause this milky taste in my mouth is irritating and so is being this tired . . P.s. i hate milk I DO NOT DRINK IT !!