Help me kill my pain...?

when im depressed or sad or cry or hold back emotions, i get headaches. there not migrains but they annoy me. so i take pain relievers. i usually double the dose that it says, and if that doesnt work within an hour i take more, if that doesnt work i take more.... and so on. but it always seems like i still have a headache... im starting to wonder if theres something wrong. and how much i really should be taking... i feel fine, not like im going to p out or something. so far i have about 2000 mg in me right now, (ur only supposed to take 500) and i still have a headache... how much is too much and why wont my headaches go away? and if i ever do have a problem, i cant tell anyone. my parents would kick me out, my boyfriend would dump me, & my only friend would just join me. our town is so small that everyone knows everything so even if i went ot the next town, my parents would know about it anyways. not that i think that i have a problem because i dont. but please help!