Cat passed away 9th of May

So my cat (17 years old) passed away on the 9th and I just can't stop crying. Like im so fucking broken right now. Just the first day when I went to see her after my brother buried her, just putting the key into the front door I broke down, because I knew if I opened the door she wouldn't be there. Like how do you deal with this feeling. I've felt sad, but this feeling is just... indescribable. I'm thinking of getting a tattoo of her to memorize her but I know it won't be enough. Will anything ever be?