Am I pregnant

Ok so I came off the pill 4 month ago and have had periods and been tracking my days .. fertile days and days I've had sex ..

My boobs are really tender .. I keep being sick .. I'm eating weird stuff that I've never thought of eating before like poppadoms dipped in a cup of tea .. jalapeño butties with brown sauce .. I used to drink coffee all the time but recently even the smell makes me feel sick .. I've had hairs growing on my face .. my belly is hard ..

Iv took hpt and it says negative

My boyfriend got told he has less than a 5% chance of having kids

Why is this happening ? Am I pregnant ? Am I not ?