What’s too early?!

Hey guys ! I was wondering what is too early to test ? I know it’s too early now but I’m so anxious and we’ve been TTC for 6+mths . Im not sure how hard it will be now that I’m 39 . I’ll be 40 feb 25th. My breast ( mostly the nipples ) have been so sore , but what’s so odd is they were sore 2 days after we tried . That’s way too early imo. I would only be a week pregnant if I am . My af is not due till feb 1st so I shouldn’t have symptoms correct ? We’ve been using the opk and we start trying 4 days prior up until the actual ovulating day . I’m praying to God I am 😩🙏🏼