Eight week old suddenly not wanting to latch on?? Normal?

She's been a wonderful nurser for the last 7 weeks (first week was rough) but all of the sudden she doesn't want to latch on......she hasn't had a bottle since the first week so it isn't nipple confusion and we've had no interruptions or major change of schedule and I haven't changed my diet in any major ways either, not on birth control or any other meds and neither is she....what could be causing this? And any advice or tips to get past it would be much appreciated b/c I feel like she's going to dehydrate or starve to death and I'm ready to throw the towel in and give her a bottle!!!! :( We are both very frustrated and I really want to fix the problem but have no clue what to do....she's my third to nurse and I've never been through this!!! HELP PLEASE....I asked a similar question the other day, just looking for some additional helpful responses...thanks in advance!!! (I don't think I worded the last one so well)