Help me plz

Patient: Ok so im a 252 pound girl i was on my period in feb and after it was over i had sex wit my ex boyfriend and 2 to 4 days later i came bak on my period it was heavy and then all of assuden it was really light and pink then i came of centz then i wake up every morning with a headache stomache is in pain my ears hurt just a lil then i took a home preg and it was neg then i went to the clinic they said the same but they basicly us a home preg 2 so wut i want to know is wuts wrong with me could i be preg and the home preg couldnt tell or is it something else plz help me im in need of help also i am getting bigger but my stomache is not gettin hard plz help me