i think i'm pregnant. in fact i'm positive that i am. i have been getting lower back pains, a bit of heartburn and constipation... but the most remarkable thing is my breasts. they keep getting fuller, heavier and firmer. i have been experiencing these symptoms for about a week now and i went to the clinic to do a test but they say its negative. i woke up at 4am this morning and did a home preg test and it was negative, but when i looked at the stick few hours later, i could see a very pale second line. but its so pale that its almost invisible. i did a test on sunday and the same thing. negative first, then few hours later, an almost invisible pink line. i thought by today (3 days later) if i did a test they would at least see a weak positive, but they say its negative. but when i do a home preg test, the very faint line shows few hours later. please help!!! is there something wrong with me? my breasts are still growing almost daily. i just want solid proof that i am pregnant