Can i get pregnant ?

tee
Im 1 day off my period (<a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> say2 ) but i dont notice anything and if it is its like real real light .. im sorryim really horny how many daya after my period should i wait to have sex . WITH PROTECTION AND PRECAUTIONS