Like a Virgin

So I was wondering if anyone had heard of this, or knows why it happens.  My BF are not having sex until we are married, but we are doing pretty much everything else.  The other day he was fingering me in both holes, it felt really, really good until my hands and wrists locked up.  It took almost 15 minutes for them to unlock and I could move them again.  I was crying it hurt so much.  We tried it again a week later, but the same thing happened.  I tried googling it, but couldn't find anything.  I was hoping someone could tell me what on earth is going on, I would apprieciate any help!

Thanks!

I have no idea but if my hands were locking up and having pain, I would be checking with my doctor asap and be honest with him/her about when it happens. 

 A few guesses on my part are you might have a circulation problem, are you clenching your fists or holding on too tightly to something during orgasm that is giving you muscle spasms that might be causing it? 

If it continues, I would not hesitate to tell your doctor what's going on.