Any cycle buddies ! Need HELP

Cristal

Okay so i am on my week of fertile window and my boyfriend & i had sex yesterday since it was high chance and he also came in me and i layed down for about 15-30 minutes so that sperm can flow to the fallopian tube. Ovulation is today but i just don't know if i keep having sex today & tomorrow or just saturday ? Can you also conceive with only 1 day of having sex i stead of having it the other days ? HELP