Flutters and contractions

C&G^3❤️ • 💅🏻👸🏼Formerly Known As May18th2016🍼
This is my first baby so please don't try to make me feel stupid...
I'm 16w1d. I thought I felt what people call "flutters" last night but don't know for sure. Can you tell me what your flutters felt like?
Also, what do the contractions feel like, and when will I start feeling them?