No other symptoms -- worried

Km • 27. Married 5 years. Our daughter Stella Claire is our entire world. Born Nov 15. 2015. Pregnant with #2 due in April.
I'm 4w5days with out first baby! I have tender boobs, cramps, fatigue, bloating and gas but nothing else. No food adversion, morning sickness, cravings, and my nipples have not darkened and the bumps haven't become more prominent.. When can I expect this? I'm scared I'm not progressing :(