I actually dislike the word foreplay because it implies that these activities are the things you do before you move on to having intercourse. It makes it seem like fingering and oral are somehow “lesser than” intercourse. Most women are much more likely to have an orgasm from fingering or oral sex than they are from intercourse, which makes the foreplay stereotype even more frustrating.
Try mixing up your usual routine of foreplay and intercourse. Once you start having intercourse, stop, pull out, and go down on her or finger her for a bit. Go back to intercourse, then stop again. Or try taking intercourse off the table, and spend one evening only doing foreplay activities. Mixing things up will keep you both on your toes, and will bring her (and you) an incredible amount of pleasure.
Vanessa Marin is a sex therapist. Check out her online orgasm course, Finishing School.