here's an idea to make the Lesbian Science Baby canon.
Jess has been Hydra all this time. She's long term deep cover, with orders to get close to Carol and manipulate her. When the final incursion happened, Hydra implemented their own plan to save what they good. Jess was ordered to get a DNA sample from Carol (for possible cloning) and run, but the plan fell apart as everyone died.
When the universe re-formed after Secret Wars, Jess was left with a DNA sample and an awkward feeling. She did some thinking and realized....she did exactly what Hydra wanted.....too well. She realizes she's in love with Carol, that she's liked pretending to be a hero all this time, and what has Hydra ever done for her anyway? So she uses the DNA sample to impregnate herself and sets out to win Carol's heart......but then Hydra command gets all pissy. They demand she cut the cord, so she staged the fight with Carol during CW2. Jess didn't think it through. Her baby is a great big vulnerability that she can't protect. So Jess staggers along, trying to keep Hydra command in the dark, trying to win Carol back, protect her baby AND pretend to be a hero. With all the stress, she has a nervous breakdown, and confesses all to Carol while sobbing in her lap.
After the post-breakdown makeup sex, Carol and Jess plan. How to take down Hydra, free Jess, and protect their child? Who can they trust?