Almost everyone got invited to lunch except me

I've been working at my current job for 5 years. My coworkers are practically family and we have had no problems until now and i'm not sure what to do. To get from context, my father has recently been diagnosed with cancer and this has added a lot of stress and fear in me. Our house also recently flooded so now we're getting renovations and cannot use our kitchen, which means I have to wash some of my food in the bathroom sink in order to eat something fresh or just eat out, so I'm desperate for some escape or distraction. At work, we have a group chat where we all make plans to go hangout recently with my father's diagnosis, we have been going to doctor's appointments and I have been going in support of him. It has caused me to miss a few outings. My co-workers have been nothing but supportive and caring thus far, still inviting me out in the offset chance I am able to make it and I appreciate it and feel very welcomed. I go into work today in am asked by other co-workers, if I will be going to lunch, which I was never told there was a lunch. I had been asked this all day and it made me feel really bad because I would have been able to go. Turns out my direct supervisor made a separate group chat invited other coworkers, but didn't add me and another girl who didn't like sushi and said no when asked, I however wasn't even asked, it left me feeling excluded. I messaged him and told him how hurt I was and asked why I hadn't been invited and asked if I had done something wrong. He then said, I don't go anymore and there was no point in asking me if I was able to make it, so he didn't invite me. I told him that I didn't make it to those times not because I didn't want to but because my father has cancer, and that I wanted to make sure that he was okay and to support him, I didn't like that I wasn't able to go to these events. 90% of the time other than most recently I have gone and picthed in money, food, and time. He didn’t message me back, i understand where hes coming from but i would invite him even if he may not make it because its the sentiment and thought that counts, I just wanted to have a distraction and finally have some normalcy after all this heartbreak. My apologies of this comes off as ranty and long, I've just been feeling really bad as of late, thank you and have a great day.