Sudden aversions at 7-9dpo?

TTC and Thursday (7dpo) I was in the supermarket when walking down the sweet aisle as I walked past packets of Mints - the smell made me gag,eating them is having the same effect and I adore mints. Also today (Sunday 9dpo) somebody lit a cigarette right next to me and seeing it and the smell also made me want to heave and I've never ever been bothered by cigs before. I know it is a little early to be having symptoms but I've been crampy,having headaches, feeling nauseus, bbs are tender,vivid dreams since 2dpo - but anyway just wondered if these sudden aversions could mean anything good like getting my BFP soon - any one have any idea?