Me and my girlfriend (23 and 21 respectively) have been together for 6 years. Our first two years were a long distance relationship, we would see eache other ever three/four months or so. 

Now she goes to uni, I work, she lives in a house with other people and I live with my parents (covid hit hard here in Italy economically speaking and consequently demolished all of my plans to move out) 

The problem 

We see each other every weekend, for the rest of the week she's at her place and goes to uni while I'm at work and go home. Every Monday, when I drive her to the train station, I feel horrible, I feel sad, anxious and I stay like that for usually 3 days, the 4th is better and by the 5th I'm doing great given the fact it's the day I go pick her up. 

I don't want to be with her 24/7, I realize that isn't okay and we both have our lives, what I would like to is being able to have dinner with her, relax in the evening with her, go to bed with her and wake up next to her. I think it's because it's been 6 years and we still don't live together. The reason? Her parents think living with me would distract her from uni, even though she studies like crazy and has great grades in all classes. 

How do I get over this? How do I feel better? I can't do it anymore. I already brought it up to my therapist and we're talking about it.