To test or not to test???

While TTC for baby #1 I am realizing it is so hard to not over analyze symptoms that are most likely things I have just never paid attention to before.... AF is due on the 16th and i am now 10 dpo... my breasts are usually sore for a week or so before my period... But this month they are not ...I have even been feeling slightly nauseous for the past few days... i keep telling myself it's probably all in my head trying not to get my hopes up like I have been for the past few months... I don't want to test until I miss AF because I have already wasted so much money on tests .... Just wondering if anyone could offer some insight... should i test or wait it out???