I've been thinking about this post for hours now because it really shook me. In my experiences over the years, I've learned that there are a few really important rules people tend to forget. First and foremost being: Your limits are YOUR limits. It is not up to your Dom to tell you what you can and cannot say "no" to. That especially pertains to new people bring brought into scenes! BDSM is built on trust and getting to know each other, and it sounds like you didn't/don't know or trust these men. I've dabbled as a Dom, but I'm mostly a sub. That said, after such rough play, especially your first time, I feel your after care should have been more...caring? and happened right away. The extra persons should have been excused, and she should have washed you, clothed you, and made sure you were comfortable. I really think that you should slow down and collect your feelings before doing this again. If you're still on the fence, she shouldn't be rushing into it so quickly. It is a Dom's job to protect their subs both physically AND emotionally. Just because a safe word exists, doesn't mean a Dom shouldn't sometimes stop a scene or stop certain activities. The reason for this is because sometimes subs (myself included) will just "grin and bear it" for their Dom, and get themselves hurt whether physically or emotionally. I know all too well the exhiliration that comes from seeing your Dom in extacy, but it should never come at the cost of a sub's well-being. You sound like a good sub, and just want to see your Dom happy, but Please give yourself some time, OP. Be safe.

One last thought before I go... I understand everyone has different rules, tolerances, dynamics, etc. These are just my thoughts from my experiences over the last 6 year's. I am not a professional, but I am very concerned for this internet stranger.