Their relationship would likely become more serious. They'd have to rely on each other more for emotional support. There would be less time for just having fun and more time for discussing practical matters like doctor's appointments and baby - proofing their living space.
Well, in the 'Degrassi: Eli and Clare pregnant fanfiction', perhaps they decide to keep the pregnancy a secret at first. This could lead to a lot of internal stress for both of them. Eli might start to distance himself from his normal activities, like his filmmaking, as he's preoccupied with the situation. Clare could struggle with her schoolwork and her relationship with her parents. Eventually, when the secret gets out, they have to deal with the fallout and figure out how to move forward as a couple and as future parents.
One good story could be 'Clare and Eli's New Beginning'. It focuses on how they adapt to life with a new baby, showing their struggles and joys. It beautifully portrays their relationship growth in this new phase.
Perhaps in the fanfiction, their friends play a big role. Their friends could be either very supportive or some might be skeptical at first. For example, one friend might think they are too young to handle it, but as time passes, everyone comes around to support them. The story could also involve how Clare and Eli balance their school or work life with the pregnancy.
The story could revolve around their relationship growing stronger during the pregnancy. They could attend parenting classes together and have cute moments like shopping for baby clothes. Maybe they also struggle with how to balance school or work with the upcoming arrival of the baby.
First, start with a clear plot in mind. Decide if you want it to be a story about their struggles with parenting, or more about the joys. For example, you could start with Clare finding out she's pregnant.
In the fanfiction, perhaps Owen and Clare decide to keep the pregnancy a secret at first. But as Clare's body starts to show changes, it becomes harder to hide. They could then face a difficult decision about whether to give the baby up for adoption or try to raise it themselves. Their relationship might be tested as they have different opinions on this matter.
The main characters are obviously Owen and Clare. Owen is likely to be portrayed as someone who has to quickly grow up and face the challenges of impending fatherhood. Clare, as the one carrying the baby, will have to deal with physical and emotional changes, as well as the social implications of being a pregnant teen.
It could get more intimate in a different way. They share a bond over the baby growing inside Clare. There might be a new level of trust and dependence on each other as they navigate through this big change in their lives.