To test or not to test, that is the question.

If I'm going off of my BBT chart (which I am because I haven't started using OPKs yet), I am 12 dpo, I believe. I counted the day after my ovulation dip as 1 dpo. 
​Is tomorrow (13 dpo) too early to test? My other fertility app is telling me to start testing on Tuesday but I'm not sure I can wait the extra day! It's been hard enough to wait this long haha