My Website give 403 forbidden until i clear my cache

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PHP

Hello community!

I have a website that is on a live domain. Some times it loads okay but sometimes it gives me 403 forbidden, even for other users it does the same, i tried my every best to check permissions and every other stuff, but yesterday i just cleaned my browser cache and history etc, and bamm, website start working, then i realized its cache problem, What could be the solution to this problem, when i clean my cache my domain starts working, even c panel won't load until i clean my cache. Is it something about .htaccess, my .htaccess has only Options -Indexes and i removed that too to confirm myself if this was the problem .. but no luck.
Any help will be highly appreciated!