Hi,
Well, contraceptives can really put a damper on natural vaginal lubrication; they're a known culprit when it comes to vaginal dryness. You might also be experiencing dryness because either you're not fully aroused or sexually engaged enough during your video call sessions w/ your bf. Masturbating and sexual intercourse are obviously two very different sexual activities; anytime you're involved in a sexual relationship w/ a partner, your relationship will become more complex because of the emotions involved. Being anxious, nervous, or feeling like you're out of your comfort zone, and possibly worrying about how you appear ('performance anxiety') during any sexual activity can also cause dryness...For future reference be safe, research water based lubricants, and use protection during any sexual intercourse. Good Luck
Everyone's body is different. Getting wet or not can be mind thing whereby you're uncomfortable etc. It can also be a factor of how the body is and lastly the birth controls can contribute to it as it alters the hormones. The best person to advice you is a doctor or a sex therapist.