Well, clearly, I don't know all the subtle nuances since I was not a part of the encounter, so I can only comment based on what you have shared and my own assumptions surrounding that, but I will say this. If I was fooling around with someone and they told me they didn't want to be intimate while I was on my cycle (your phrasing), then I would not initiate anything at any point while I was on it. My reason for that response is that "being intimate" to me means a lot of different things. If I were the woman in question and you had said "I don't want to have sex while you are on it" then I may very well initiate other things. But if you use the blanket term of being intimate, then I'm going to stay pulled back.
I think your feelings are valid, so I'm not going to comment on whether you are being a jerk or not, because that really isn't even my place to say. What I'm wondering, though, based on the information that you gave is, would it have made a difference if y'all weren't on this trip so you were basically forced (for lack of a better word) to stay together or is it maybe that the trip, itself, was a bigger step than you anticipated and now it is seeming like more than you thought? if I'm understanding your explanation correctly, you hadn't seen each other in 2 weeks and then she stayed over Thursday night to leave Friday. You told her then you didn't want to be intimate and then carried on with your trip, effectively making y'all stuck in the same room for 2 nights (Fri and Sat). I have had FWB relationships before and never have I gone on a weekend get-away with one of them, so I'm wondering if that might be affecting your thinking?
Why are you questioning continuing to see her? I'm not sure I'm drawing a logical conclusion between lack of sex and stopping seeing her when you are only spending a night together roughly once a week. Sorry I am rambling but so many questions...…………...LOL
Me 52, H53 Bomb drop 9/29/2014 Divorce from XH final 12/17/2014 Marriage #2 12/31/2019 5 adult (step)daughters (3 from XH's first marriage, 2 from current H's previous relationships) 6 grandkids