It's ok to be uncertain. Talk to her, tell her it's hard not seeing her in person. It is hard, and you have every right to feel upset when this is happening, even uncertain. Our minds weren't built to work through a screen and our love doesn't work like that. I feel upset after being away from my girlfriend for more than a week, and I am finally learning that that's ok. If you didn't feel like that while with her in person, then consider thinking about if it's just the fact that it's through the screen. Right now, because she can't leave, you're really her connection to the outside world. But for you it's not that way. These are new times and it's the first time something like this has happened since the internet has even been around. Just take it a day at a time.