Need some information about pulling out

So my boyfriend and I are very much in love, but we're also very sexually attracted to one another. I'm eighteen and he's twenty-five, and we're both fine with the age gap, but I'm not sure if pulling out before he comes will be safe. My period is supposed to be soon and I'm on the look out for it, but should I let him in my vagina at all if I'm not on bc? Would really appreciate some accurate, medical advice! 😊