|It sounds to me that your browser and probably even your system needs a good 'clean out' (software/crap type of clean out).|
In your Browser, clean out your History, Cookies, Temp Internet Files, etc.
Set your browser to keep history for only 2 or 3 days.
Set your browser to delete cookies when you close it.
Do a Disk Clean Up on your system drive: Computer>Right Click on your C drive>Select Disk Clean Up>Select everything (or nearly everything) and OK and run it. It may take a few minutes to come up and even longer to run if you have not done this before, but it is worth the wait.
After these are done, there is one more thing that should be done periodically and that is to run Malwarebytes (Install, update, and run it if you do not have it already) to make sure that you are clean of malware also. It is a good program that will not interfere with your antivirus program and only runs when you tell it to, but it may pick up on things that slipped by your antivirus program.
You have to be a little bit crazy to keep you from going insane.