I think I’m in denial about death

So to shorten things , I found my grandpa (60) on the floor dead from a heart attack last month that was on the same day that my grandmother had died the previous year ,we were really close , the day after the funeral I had to put my family dog down , five days after that I had a uncle that was given two days left to live from stomach cancer who then passed away (45). I have accepted my uncles death because our history was not good , however I still do not feel as if my grandfather or dog is dead , I have been in a funk and a little upset , I have recently been called out on speaking about them as if they have not yet died , I haven’t been able to wrap my head around it but yet I know they are gone . I don’t know how to fix it or come to terms with it . I’ve been in a funk and feel like I’m not able to get out , even with my boyfriends help .