If this is unusual for you then i would sy its a very good sign. Go with your body on this chick, when i got my bfp i just knew. Was very strange as i was the calmest i had ever been in a 2www & relly was not symptom spotting but for some reason i thought i should test at 9 dpo and low & behold it was positive!
I do honestly believe we have a certain intuition that picks up on these things.
Good luck & fingers crossed
xcx