Ay, don't worry po! "Adnexa" ay ang ovaries at fallopian tubes mo, at "cul de sac" ay yung space between your uterus at rectum, both normal structures lang na tinitingnan ng doctor sa ultrasound to make sure everything's okay, kaya yan ang "negative" meaning walang problema doon. Pero para sa peace of mind mo, better to ask your OB directly kung ano exactly ang nakita nila at bakit naka-note yan, kasi may context sila based sa buong ultrasound mo at your health history, yun ang best reassurance talaga!