Hey guys, so last night I went to look at some website my friend told me check out on my Iphone. Turns out it was a porn site. The only app on my phone was Spotify, which I was logged into, it's also linked with my old Facebook account that I never use. While on the site, it opened one or two new windows in Safari. I left the sites, and closed the new windows. I cleared my history, and the cache, then put my phone up for the night. This morning before my lacrosse game I went to listen to Spotify on the phone. It said I had been logged out and that I needed to log in to continue. Every time I tried to log in it said the password was incorrect. So went to log into my old Facebook which the account is linked to, therefore they share a password. When I attempted to login to the old Facebook it said someone tried to login to my account from a new location. So I closed Facebook and haven't done anything since due to a long day of lacrosse then having to go to work. Also my moms American Express is linked to my Spotify so I told her to change the password just to be on the safe side. She doesn't know it was porn, and I think it's irrelevant, but I think I somebody was trying to hack me. What do I do to get rid of them?

Any help is greatly appreciated, thanks.