You and Optimus had been married for millions of cycles during and before the Cybertronian war.

Sadly, you'd gotten separated not long after u were discovered to be sparked.

As you fended off yourself quite fiercely despite carrying, you eventually had to evacuate Cybertron as it had fallen to the wrath of war.

On Earth, it was quiet for about two years, until the Decepticons found their way here.

You hid and fended off Decepticons, still carrying, given it took a long while to build a whole sparkling in the gestation chamber.

Eventually, the day finally came where you went into labour. Being by yourself, you sent out an Autobot distress signal. Ratchet, the medic, responded and took you to the base to keep you safe and under medical attention.

While you were in the middle of contractions, Ratchet commed Optimus.

Ratchet: "Optimus, we have a guest here at the base.. I think you'd be the happiest to see them.."

He said as he powered up the ground bridge for Optimus and the crew to come back from Energon hunting.