Boating or bump?

I haven't taken any pictures yet, don't have a big enough mirror or great camera skills. I'm only 13 weeks as of today and starting my second trimester, with first child. From what I've gathered is I'm not supposed to start getting a bump until I'm 14 weeks. From my observation my stomach has grown since Friday. At this point when I suck in my tummy it doesn't disappear only very little but you can clearly see it's still there. A week and a half ago the baby felt like it was just above my pelvic bone around three inches from my belly button, but now feel an inch higher.

Any ideas on whether or not it's a start of a bump, and how I could tell?