Help my kitty🙏🏻🙏🏻

Sarah

Alright ladies I need some help. Calling all veterinarians or anyone with major cat experience. My amazing kitty is kind of concerning me. He is peeing in unusual places for him and also quite frequently. One of my cats also threw up. I dont know if it was him or not but it could have been. Sometimes when he goes to use his box nothing come out. I go to scoop it right after and there’s nothing. His name is Seamus. He is an almost five year old indoor cat with two other cat brothers and two dogs. Other than all of this he is acting normal. I just need some help. Please if you have any idea what’s going on please give me some ideas🙏🏻 thank you.