Am I wrong?

So my partner and I have different friends, of course we share friends as well. Most of my friends are couples that have children or if not are trying for one, also have a number of friends that are more family than anything else are are very close to our daughter. So the other night my partner dragged me out with a group of his friends who I don’t always get on with 100% as they tend to enjoy socialising in pubs and clubs and I’ve never been one for drinking neither has my partner but recently he’s got really closed to this group of friends. One of them is actually pregnant and I would speak to her as with me being pregnant we have something in common. She got on the subject on how her partner is going in a weekend away on a stag do in the days before her due day I know it’s very unlikely that she would go into labour on that day but out of habit I just said that I wouldn’t be letting my partner be away for the weekend so close to the date our baby is due, she lost it with me saying that I was a bitch and that she wouldn’t stop people having fun just cause she’s pregnant and took it way out of what I meant, she said that if she went into labour he would come home and be with her but I just said okay then and left it at that then I was receiving messages of all the group accusing me of everything and stating that I claim to know everything and I just simply lost it and ended up saying that at the end of the day even if he managed to get to the hospital in time if he’s drunk I doubt he would be allowed in the room with her in labour and I know I shouldn’t have snapped but they had pushed me. Now my partner hasn’t spoken to me properly for two days cause apparently I’ve put him in a awkward situation with his mates. In the last few days I’ve seen messages from them telling him absolute rubbish claiming I’ve said something to each of them and I really think they are just trying to get between us cause I don’t like them that much, I’ve tried to speak to the partner but he doesn’t understand and keeps saying that I’m in the wrong I don’t really know what to do, he’s got a bbq with them this weekend but I honestly don’t want him to go but how do I make him understand?