Deleted items not showing in Trash.

My name is Terri. My MacBook Pro is running High Sierra 10.13.6 13" late 2011. Please help! Deleted items are not showing in trash since upgrading to H Sierra. This began gradually now trash is always empty. I am now running out of space! When I delete say 50 files, the trash either continues to show empty or maybe one file. Where are my deleted files going?

I have read other posts regarding this problem and have checked and confirm that I do have read/write privilege. Also 'lock' is unticked. I stopped backing up to Time Machine because I don't want to back up things that may be causing a problem. Recently I installed ClamAX which found some infected files which have now been quarantined and deleted. I am sure trash overload is causing my many problems. I don't know anything about the 'terminal' investigation. 'Mail' has stopped working and all of my accounts are knocked off line even though I'm showing a good signal. So at the moment I'm using webmail. Please help. Thank you, Terri