Lack of symptoms good/bad?

My son is 14 months old and I am currently 6 weeks pregnant. First time around I knew I was pregnant before I even took the test. I was embarrassingly angry and happy the same day, I was nauseous and I couldn't stay awake (even at work). I've realized today that I've been pregnant for 2 weeks now and I keep forgetting because I literally have no symptoms besides acne... which doesn't even count cause I had that as soon as I quit birth control.

Has this happened to anyone else? I'm just worried that my pregnancy isn't viable due to the lack of symptoms. Any reassurance of similar circumstances would be greatly appreciated.