I just wanted to say this

So today there was like a carnival i guess you would call it and a lot of my friends where going. Now they generally invite me a lot but not today. I didnt get a call or a text all day I didn't know the time or anything until one friend called me last minute to tell me to come and idk it just felt kind of weird and I just feel like if they wanted me there they would have reached out at some point and not last minute too. I dont know if I should have called and asked when they where going if this is a misunderstanding or if I should discuss this with them or if im being a big baby about. I just dont wanna feel like the afterthought and i dont think they value me as much as I do them. Idk what are your thoughts?