Anxious about pregnancy please help!

Me and my frnd had protected sex first time for both and we it was 8 days post the start of her previous period. And i came inside her with the condom when i took my penis out im little sure that the condom was intact and also i saw cum like collected at the tip. But i also saw some white substance over condom and near my abdomen what is that white substance. Did my cum leak out or backflow. We are just anxious and having pregnancy scare.