The Gryffindor Quidditch team members would probably be a mix of reactions. Some would cheer them on, seeing it as a great couple on the team. Others might be a bit more reserved in their reactions, but still support them. And of course, there would be some good - natured ribbing during team practices and celebrations.
There could be some friends who are a bit jealous. Maybe a girl who had a crush on Harry would be a bit miffed at first. But overall, most of their friends would accept it. The Weasley family as a whole would likely be very accepting, with the exception of perhaps a bit of teasing from the twins, but in a good - natured way.
Some of their friends might be really happy for them. Ron, for example, might initially be a bit shocked, but then he would be glad that his sister and his best friend are together. Hermione would probably be more composed about it, but still give them knowing smiles. Neville might be a bit shy around them at first, not really knowing how to act with the couple who are so clearly in love.
Hermione would probably be super helpful. She'd offer all kinds of advice on everything from pregnancy care in the wizarding world to setting up a nursery with magic. Ron would be a bit more awkward at first, but he'd still be excited. He might joke around a bit to lighten the mood. Neville would be very kind and bring over some of his own home - grown magical plants that could be useful during the pregnancy, like plants that have calming properties or ones that can help with minor ailments.
Ginny might be overjoyed. She could blush deeply and then give Harry a big hug, telling him she feels the same way.
She might blush. Since Ginny has feelings for Harry, his stare could make her feel self - conscious and her cheeks turn red.
Some of their friends might also be a bit worried. For example, if there are still dark forces lurking in the wizarding world, they could be concerned about the safety of the baby. But overall, the love and support from their friends and family would far outweigh any concerns, and they would all come together to ensure a happy and safe environment for the new addition to the family.
Their friends from the Order of the Phoenix would be overjoyed and offer protection. Neville might give them some special plants that are good for a magical household with a baby. Luna would share her unique and sometimes strange but helpful insights about the baby's future.
Their other friends in Gryffindor would be quite shocked. Neville, for instance, might stutter and not know how to react. Luna might have a more calm and accepting reaction. She might say something like 'This is a very interesting turn of events. I wonder what the magical cause could be?' The Weasley family would be especially confused. Molly Weasley might be worried about Ginny's well - being and Arthur Weasley would be trying to figure out how such a strange magical occurrence could have taken place.
Alternatively, Ginny could be very mature about it. She might respect Harry's decision, even though it hurts. She could choose to step back and give Harry the space he seems to need while secretly hoping that he will change his mind in the future.
On the other hand, Ginny might secretly be a bit flattered that Harry is so possessive over her. But still, she would probably try to stop the situation from getting worse and make Harry understand that he can't just go around punching people because of her.
He could be initially shocked. Harry, who has trusted Ginny deeply, would find it hard to believe at first. He might go through a period of denial, trying to find excuses for Ginny's actions.
Harry could also go into a state of shock and disbelief. He loves Ginny deeply, and to find out she's cheating would shatter his world. He might start to question everything about their relationship, like all the memories they've shared together. And he could become very withdrawn, not wanting to talk to anyone, even his closest friends like Ron and Hermione. He would need time to process his emotions and figure out what to do next.