Are you taking medication for it? Perhaps someone at the pharmacy is a leaker of info.
That and doing on-line research. Some years ago I did some light research on condos and have been getting periodic mailings with statements like "Save big on fees for your condo" or "Sell your condo through us"....never talked to anyone, or even looked at any - just did some on-line browsing...
If thinking lawsuit - you probably have even less on "whoever" than Mueller has on Trump....