The police are not that helpful to their fellow Bulgarians, let alone foreigners who do not speak the language, so do not expect much. Bulgaria has well-trained medical personnel. No charge is made for consultations about, or treatment of, emergency cases. There is a clinic for foreigners in Sofia. The prices for the medical treatment and medicines there are reasonable.
Prostitution is rampant, especially in resort towns and seaports.
Casual sex is definitely not a taboo, and condoms are readily available in pharmacies. They don't ever work as balloons or soap containers. Although public displays of affection among the same sex are common, homosexuality is not openly accepted. As far as attitudes toward homosexuality go, Bulgarians waver between denial and intolerance. Many do not have meters, and the fares are calculated from the driver's odometer.