Lol pregnancy indeed, but I highly doubt teenage pregnancy will be an topic in this anime, or in any popular anime in general. Unless this anime wants to bomb badly, it would make any commercial sense not to explore that or else... you're going to get some otakus to overreact due to their obsession of "purity" and "innocence". See what happened to Kannagi and K-on's Ritsu for example just because it was hinted they had boyfriends in the past... let alone teenage pregnancy.
Not that I would mind it. It would be refreshing to see some slice of life anime not "idealise" its characters.
Btw, Archon Wing why you still watching this? I thought you hated teen dramas