I wouldn't necessary call it unnatural either. The fight will be between something that is pleasurable and natural against rules they are told to follow and things they are told to refrain from. Masturbation is a safe way to release sexual tension during pregnancy. It's not just negative and positive feedback, but yes. Vulvovaginitis is an inflammatory condition that affects the vulva and vagina.
Are there side effects to masturbation?
The level of these changes totally depends on the number of times one indulges in masturbating. This is one of the most common side effects of excess masturbation. These include pleasure, enjoyment, fun, and tension release. But masturbation is normal, healthy, and not something to feel guilty about. The effects of over masturbation can be determined quite starkly, with the body undergoing both physical and mental changes. Masturbation may lead to overproduction of sex hormones or even the neurotransmitters.