A couple of questions... After your first session, are you now going into an "onramp" program with your crossfit gym/box? Does your gym post workouts online? And how much sleep are you getting?
For MOST new people attending crossfit, I would strongly recommend two or three days a week tops, depending on how you space out your days. This works for 1-2 months, provided you are doing some other exercise in between (low impact specifically, like walking, swimming, trail running, etc). After a month or two, I think it's safer to approach four days a week if you'd like to go that frequently. I have been crossfitting for over a year and a half now and I can do five to six days without worry, and even use the 7th as an active recovery day.
Biggest question though, is whether they have you doing any foundations or on ramp program.
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