Should I get a birth control prescription from a GP or Gynecologist?

I am a 30yo man, my girlfriend was found positive for chlamydia, and I need to do a STD/STI checkup (haven't done one for a longtime, long before we started dating). What is the process? Where should I go (in Brussels)?

Dear Sir/Madam, Recently, I have been experiencing discomfort in my genital area, characterized by itching and mild irritation. Additionally, I have noticed two small marks. These symptoms arose approximately two weeks after engaging in unprotected oral intercourse. While I am uncertain if I am overly concerned, I am eager to seek medical advice. Could you kindly advise me on which healthcare professional I should schedule an appointment with? Thank you for your attention to this matter.

I'm a 25 year old woman. I had sex on 1st day of my period, had minimal penetration with no ejaculation but unprotected and I have PCOS. After 43 hrs of sex I took postinor 2, it's been 23 days of sex and I'm suddenly getting too much watery slippery clear discharge. why so?

Yesterday I have sex and the preservative is broken. What can I do ?

Are the homeopathic medicines Euphorbium compositum (nasal spray) and Anti Angina (throat tablets) safe during pregnancy? Thanks in advance.