Erza would probably be very protective. She would make sure Lucy has everything she needs and would be strict about her safety. Gray might be a bit awkward at first, but then he'd be supportive. Happy would be over the moon. He'd constantly be around Lucy, bringing her fish and trying to cheer her up. Wendy would be excited and would offer to use her healing magic to check on the baby's health regularly.
Their friends' reactions would be quite diverse. Levy would be thrilled and would immediately start looking for books on how to take care of a pregnant wizard. Gajeel might act all tough on the outside but would secretly be happy for them. Cana would likely joke around a lot, saying things like she can't wait to see a mini - Natsu causing chaos. And the guild as a whole would come together. They'd throw parties to celebrate and would be ready to defend Lucy and Natsu from any threats that might come their way because of the pregnancy.
Well, their friends' reactions would be very interesting. For instance, Juvia might initially be a bit jealous that Gray is so involved in Natsu and Lucy's situation, but she would quickly shift to being supportive. Makarov would be like a proud grandfather. He'd offer his wisdom and support, and would also make sure the guild is a safe place for Lucy and the baby. Laxus might seem indifferent at first, but deep down he'd be glad that there's new life coming into the guild. And all of their friends would probably start making bets on what the baby will be like, its gender, and what kind of magic it will have.
Their friends would likely be shocked at first. Happy for them, but also a bit worried. Erza, for example, would probably be very protective. She might start giving Lucy all sorts of advice on staying healthy and safe during the pregnancy. Gray might be a bit awkward around the whole situation at first, but would eventually warm up and offer his support in his own way, like helping Natsu with any odd jobs or tasks so he can focus on Lucy.
Their friends would likely be shocked at first. For example, Gray might be initially speechless and then crack some jokes about Natsu finally becoming a family man. Lucy would probably be super excited and offer to help Mira with anything she needs, like shopping for baby clothes or setting up a nursery.
Erza would probably be very protective. She would make sure Mirajane is taking proper care of herself and would offer practical advice on things like diet and exercise during pregnancy. Gray might be a bit awkward at first but would warm up and offer to help with any heavy lifting or tasks around their home.
Some of their more light - hearted friends, like Happy, might make jokes about Natsu becoming a father. But overall, the Fairy Tail guild would come together to support them. Makarov, as the guild master, would ensure their safety and provide any resources they need. And Levy might be researching about pregnancies in the magical world to give them advice.
Well, Natsu is a passionate character. He could react with a lot of excitement. He might pick Lucy up and spin her around, laughing and saying how amazing this is. Or, he could also get a bit worried and start asking Lucy all sorts of questions about her health and what they need to do next.
Some fans would be really excited. They might love the idea of seeing their favorite characters in a more mature and family - oriented situation. It could add a new dimension to the Natsu - Lucy relationship that they've always wanted to see.
Some of their friends might be worried at first. They know the dangerous lives that Natsu and Erza lead. But then, they would all come around and be very supportive. They could throw a big celebration for the pregnancy, and everyone would chip in to help make a comfortable space for the baby in the guild. There would be a sense of new hope and family spirit in the group.
Natsu would likely be extremely guilty. He might immediately stop whatever he was doing and rush to Lucy's side.
She might start to blush furiously. Given her character, she is a bit shy when it comes to romantic matters. And then she might start to stammer out a response, not really sure what to say at first. As she composes herself, she could tell Natsu that she has feelings for him too but in a very gentle and sincere way.
Their friends would likely be very excited. Lucy would probably be overjoyed and offer to help with things like baby clothes shopping. Gray might act a bit gruff on the outside but secretly be happy for them. Erza would be very protective, making sure that Lisanna has everything she needs and that the guild is a safe environment for the baby. Happy, Natsu's Exceed friend, would be constantly around, making cute comments about the baby and offering his own unique brand of support.