menses

[absintheatnight.livejournal.com]

hi, i was directed here by someone in another community. my mother never really took the time to speak with me about my period. its always been off schedule so i dont really think about it much.
okay, sorry, on to my ? now...
i recently got my period after a five or six(told ya i didnt pay that much attention to it...lol) month hiatus. its been really heavy and clumpy. not huge clumps or anything like that, but clumpy none the less. when i urinate, the water in the bowl turns a really bright pink, which isnt normal for me. usually when i do have my period, its light and goes away after about three days. this time ive been going for about six days and its been continually heavy, and i mean consistant. i use pads right now, only because im still unsure as to how to choose tampons, and the pads have lasted maybe three hours, unless im laying down for a long period of time(say sleeping).
is this all normal? do i need to see a doctor about it? should i even try using tampons? are the clumps normal?
i do have an eating disrder, which is one of the reasons ive been so irregular, so does this add to any of these thing? im so confused right now and really looking forward to your answers:) thanks in advance.