There is something weird with my mouse..?

I'm not really sure how to explain it.

It was a couple days ago when I noticed this.

This is the problem.

I use Google Chrome, and I usually work with many tabs open at once. But lately, when I go to close a tab, it usually ends up closing the one right beside it too and sometimes it minimizes the whole screen.

Also, when I open a new tab, it turns the page I'm presently on to what the new tab is, and sometimes the tab opens twice.

Also, sometimes my tabs just disappear randomly without me closing them.

Also, I can't delete files anymore because when I hold down ctrl and click the file, it actually opens the file instead of highlighting it. It's as if my mouse double-clicks when I single click.

I was just wondering if this could be a problem with the mouse itself, or could it be some kind of virus/malware?