Once you are officially pregnant, you will not ovulate (in very extremely rare cases does ovulation during pregnancy occur). If it's a clear/egg-white type liquid, you should be fine. If you are concerned, you can discuss this at your first OB/GYN appointment. Considering that you are only in your fifth week of pregnancy, it's okay to be nervous about different fluids excreting from your body, but this is one of those that's okay.