Should I tell a date I've seen once that I have been going through unmanageable anxiety think about her?

I have been talking to this girl for a few weeks and we just met for the first time at a cafe two days ago and had a great time. Awkward sure, but sweet. She said shed love to meet again and honestly after the date is really when the anxiety and looming feeling of doom set it. I haven't eaten in three days, I can't stop tensing my body and medication is useless atp. Other sources and people have told me to just be honest and that I should ask for reassurance but how do I go about that?