Help!!!!

I need y’all help I been trying for a year now get pregnant I had my period nov 30 I didn’t stop it till dec 13. Later on middle of the month starting taking pregnancy test I though I was pregnant cause my breast is hurting back hurts headache feeling sick. So I been taking pregnancy test I got 5 fainted lines on them so next day I took more 4 of them said negative but really don’t knw I’m not stressing went to the hospital other day chest pain they said I’m not pregnant so what do I do....