Sorry you are going through this BNLs. I was major paranoid too after the forced hospital visit in Dec '08. I thought the police were coming again and I kept staring out the blinds for months after the incident.
It's not exactly like our fears are unfounded after we've been to the hospital and drugged. Especially if you were taken there by force as I was.
All I can say is that it went away with time and I saw that nothing happened. I was left alone and calmed down over a period of time. I learned what not to say and write that might get me into trouble in the future.
But meds getting adjusted right helps a lot. Not too much, not the wrong ones, not too little.

You just have to tell yourself that no one is going to get you, it's just your mind playing tricks on you. Most people are too self-absorbed to even care about following or spying on anyone else. They're too worried about what other people think of them. Easier said than translated into a sense of security, but worth thinking about.
Take care.