Long wait time (but only on MY wordpress site)

My wordpress site (www.stephchan25.com) has been taking forever to load. It’s not my internet bandwidth issue, nor is it my computer issue. It happens at school, at home or at work. I just noticed it yesterday. I thought it could be my theme but it isn’t because it worked fine last Thursday.

It takes about 4-6 minutes to load any page, even the pages on the dashboard. But when I tried my client’s website, it load fine.

The theme I have on now is called Platform. I was going to upload the theme but it gets stuck it “enabling maintenance mode.”

Please let me know what I’m doing wrong!