What are the cops going to do? Round here at least, thought crime isn't yet a thing. It'd essentially be the same as if you said "Sometimes, I want to hurt people". If you're actually speaking with a medical professional, what you say is legally privileged information, and AFAIK for the US at least, that continues until there is reasonable belief that you will harm someone or commit a crime.
This totally glosses over the social aspect, but for any legitimate medical provider that shouldn't be a problem. I don't want anyone who needs help to be afraid of seeking it.
To be fair, proper ISO 8601 specifies hyphens as the separator between date elements, and I don't think I've ever seen a XXXX-XX-XX (with hyphens) be used for YYYY-DD-MM. Just XX-XX could perhaps be ambiguous, but fortunately that's not allowed by the standard, and anyone using just year-day for XXXX-XX is absolutely trolling. YYYY-DDD could have a use, though should really use a separate separator to not sort together IMO. A year-week designation could possibly look like XXXX-XX, but that seems unlikely to just be dropped in that format without context, at least to my western US sensibilities.