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Do you have any other medical health issue or have been on medications? It is better to have a complete check and treatment if any health issue you have. Regarding discharge, it should be checked in the laboratory by sending a high vaginal swab to check which organism is causing smell and irritation. So, for vaginal discharge, you should have a high vaginal swab and its report needs to be checked here or with a local gynecologist doctor or even you can discuss with infectious control to get specific treatment, if needed. After collection of the swab, have tablet Metronidazole 400 mg eight hourly and tablet Doxycycline 100 mg 12 hourly for 14 days. After swab result, it might be possible that you need specific treatment as well or need to investigate and treat your partner as well. For lump at the vulva, it would be better if you would send me a picture of the issue. If it is lump hanging or coming out or seems to move out at coughing, the pressure or at abdominal stress, then it could be prolapse like cystocele, at rectum rectocele or urethrocele might be due to tissue weakness or increased intraabdominal pressure or difficult delivery. The skin over it could be different due to local friction even could be inflamed and bleed as well. If just small skin tags are hanging, those could be warts that is the infection actually.
Any local cyst or abscess could be likely related to Bartholin gland that also needs to be treated. It is better to have one local examination at the time of collection of swab by the gynecologist. The skin tags or skin scraping could be sent if it is wart like thing to confirm causative organism. In case of lump that could be cystocele, rectocele or urethrocele, and needs to be graded as in some cases, it needs exercises, vaginal pessary or even more advanced surgery. Have a strict hygiene. Wear soft comfortable undergarments. Use condoms to prevent transmission of sexually transmitted infection. Sitz bath can be tried. Avoid local cosmetics. Use a soft blade to clean hair.