Hi Syradmb,
Yes, I experience strong anxiety attacks when I'm going through episodes of OCD. My face gets extremely flushed, I get stomach cramps, I sweat, my heart beat goes way up, I feel dizzy, I also feel like I want to crawl under something and hide...in general, I do feel as if I'm going crazy! You're definitely not alone here. I believe that these attacks of anxiety are called 'spikes' in the world of OCD treatment. These occur when some obsession pops into your head...it is very common with us OCDers. I, too, used to fear that I was schizophrenic or something like that. However, you are not schizophrenic or anything like that! You're just experiencing a lot of anxiety which can make you feel as if you're losing control.
I would suggest seeking out a professional to help you with the OCD. I have been going to cognitive behavioral therapy for about 6 months now and it has been working WONDERS! The OCD is certainly not gone by any means, but I have more control over it rather than it having control over me. I am going through a relapse right now, but it seems to be more transient and I know I can work on it in therapy next week. Hang in there!...the anxiety will pass and you're not going crazy!