There's always a possibility. Discharge tells you where you are in your cycle but it doesn't say whether you are pg or not. Egg white cervical mucous means you are about to ovulate (those are your most fertile days). If you had sex within 5 days of when you ovulated then the chance of you being pg is a lot greater but by the sounds of it you didn't have sex around your most fertile days. It sounds to me like you are about to ovulate.
When was your last period?