Well, Missing them is a good thing, it shows you have feeling for them, Missing someone at the start of of “dating” is totally natural.
As to what you should do…...... you say they cant call or txt you, can you call or txt them? Cant you email them? How long are you going to be apart, if it’s a fairly short time, you can focus on meeting with them again and look forward to the hugs and kisses.
If it’s going to be a long time, you can maybe write to them, using good ole pen and paper. If theres other circumstances preventing contact…...........Well difficult to comment without knowing, to be honest.
Just know though, missing someone is perfectly normal and sometimes necessary for a relationship to flourish in times when seperation is unavoidable.
Hopefully you’ll see them soon!
BB