Wifi connection problem?

[Megzicle]

Normally, my phone will connect to networks that I've entered the pass word for automatically (like my house or campus). But lately, my phone won't connect to any wifi network. At my house, my internet is fine. I had my phone forget the network and then try to reconnect, but then it won't even detect the network, and I can't get it to connect to any at all. I like to use my wifi on my phone at home instead of my data, so is there any way I can fix this?