In a funk again........

In a few days, my younger son is moving out to start medical school. I am very excited for him but also sad that he is moving out. I am much closer to him than my older son. I don't know why that is, when my oldest was my daughter we were close, but the relationship changed after she did and now he is with a partner and I seem to always just be in the way unless they need me. They know I will watch my granddaughter any time they ask me, even though we are all in the same house.
So the past few weeks I have been just in a strange place in my head. One minute I feel great and the next I'm sad. I already take meds and don't want to increase the dose bc that raised my BP. So I'm trying to figure out what to do.
On August 6 my school year starts. Fourth year in high school. Time flies. I hope this year comes with no drama. My night time job will start on August 27 so at least I will have a few weeks to come home after day job and just relax.
So there you have it......I'm in a funk and feel like it's getting worse. I do know that one thing that is bothering me is the fact that I'm lonely. Even though I do many activities I don't have anyone to come home to for a hug. I guess that's one reason why I'll miss my younger son so much, he would always give me a hug when he saw me. I have tried dating and no luck here where I live. I don't want to move away from my granddaughter, so I'm stuck here. I have 10 more years of working before I can retire and would really like to meet someone before then.
So that's about all I can put into words. This mood of mine needs to cheer up if I'm going to get back on track and lose this weight.