Bdsm TO THE MAX

So me and my boyfriend have been talking and we have had sex before but he’s into like crazy BDSM. And he’s into making me cry from the pain (yes I know some people will think that’s messed up but for us it’s actually a intense thing cuz afterwards he holds me and cuddles me letting me know it’s okay) but anyways he’s into like belts and shocking and other really hard core stuff. And at first the thought of it turned me on, but now it scares me. We do light BDSM, but he’s been asking if we can take it further and idk how to calm down about it. HELP