I'm so sorry about Havok. The weekends are the hardest for me, too. Weekends and the days when I'm working from home. My kitty Dante used to stay right beside me when I was working at home and I really miss having his company. He always seemed to know when I was particularly stressed and would curl up in my lap and purr.
Try to cut yourself some slack and give yourself some time though. A week and a half is not very long at all. I am nearing 5 months without Dante and I still cry over him sometimes. It gets easier, but it's ok to feel sorrow and take however much time you need as you deal with your grief.
Thank you for your encouraging words, I do need to get better at just being ok with having harder days than others, part of me is still saying I should be over it, but I've learned on this forum that what I'm feeling is normal.
So sorry for you loss of Dante