3 DPO need advice :)

Hi everyone:) so my boyfriend and I are new to the whole "ttc" group:) I'm 3 dpo and I have been having sore nipples, not breasts. I woke up with the strongest craving for bananas and strawberrys! Lol and I'm not sure if this makes a diffrence but I started with a yeast infection yesterday. (My best friend said that her first sign of pregnancy was a yeast infection. I thought that I would just throw that in there lol) my period is due in the 7th so does anyone have any advice, or similarities when you were pregnant? Could I have a positive hpt already or how long should I wait? My boyfriend and I are keeping our fingers crossed:) please send baby dust!