Kind of tmi, but periods and dating?

I just started dating this new guy and already cancelled on him once, rescheduled another time and we have only been on 3 dates. He seems to expect to see me every weekend which is kind of becoming a lot for me. Tmi but I'm getting my period this weekend and I don't know if it would be weird to tell him that? Or how to? Because it's probably hit or miss if I'm gonna be up for another date this weekend
Kind of tmi, but periods and dating?
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