Sensitive nips? Just nips.

Melanie
This was weird for me as I just noticed day before yesterday. My nipples hurt, like they were sensitive to touch and erect. Sensitive thru my shirt and bra. Now this app said I was fertile from June 26 to July 1 or 2. Another app said I was fertile from the 30th to the 6th. Now idk if we got lucky or not cause its to early to tell, but anyone have symptoms? I'm ttc for the first time. Last AF was 6/21/15. Expected AF maybe 7/15-7/19. Plus I've been a little more tired, but I sometimes contribute that to my job. And I have allergies, doubtful that's a sign. Smh