signs of pregnancy.

Jesika •
hi ! my name is jesii lynee .
​i havent really had my period ,but ive had spotting every other week for 2 1/2 months . ive gone to the doctor for a pregnancy test twice and have taken 3 home test and all of them have come back negative .
​could i be pregnant or just worrying over anything . im also having other signs of pregnancy . my boobs hurt and i have a metal test in my mouth like i did with my first child. 
​anything would help !