Hi, practo user,
Oral sex doesn't obstruct, errection ,but frequent oral sex can decline desire for normal sexual activities being scared of facing normal penetrative sex, carrying hazards to both the partners.
Choice of oral sex, holding a firm errection is psychological, rather, you are scared of normal sexual activity followed by premature ejaculation being deprived of satisfying your partner on the occasion through vaginal penetration where as oral sex, does not require to satisfy a partner, except, enjoying self orgasm.
Tke, away from frequent oral sex.
Next Steps
Your strong will can guide you, well to rescue frequent oral sex being hazardous for both the partners, apart from homoeo medication.
Health Tips
Avoid, junk food, alcohol, nicotine and pornography.
Tke, care.