Would he expect me to do the something similar to him now next time we meet? This is the first time i have a boyfriend and i'm not a teenager, but i don't think I can do something like that to him anytime soon, would he be upset if I just did nothing for a little bit, at least another couple of weeks? What would a man expect from a girl at this point?
There are 2 issues here:
1) Would he expect this again next time you met? Yes, because guys like being physical, and you crossed a boundary.
2) Would he be mad? Well, he shouldn't be. He should understand you have different comfort levels with different things. But consider this: you have the right to say "no", and he has the right to find a new girlfriend.
You can delay being physical again and again, and lose boyfriend after boyfriend, or try to make some progress with it. That's my suggestion. And if you choose to try to make progress, albeit slowly, you need to tell him VERY clearly that you are trying. If a guy wasn't making progress being ready for marriage, the girl would drop him in an instant. It's the same idea.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
(Please note, we give the best advice we can based on the information given in a post. For better advice, please include the age of all romantic partners.)