Two months ago, when you lost your job, you went to a bar to drink your sorrows away. You ended up blackout, and the next morning you woke up next to a recognizable face in bed, completely aware that you had slept with Optimus prime... your prime.

Obviously, you quickly left the optimus prime's house, praying to Primus he didn't remember your face

The problem was that two months later, to your horror, you found out you were pregnant, and you knew it was that optimus baby.