Feeling not pregnant?

Joss • 29. Married to my best friend. Mommy of 1 sweet baby boy & pregnant w/ baby no.2.
Since before I knew I was pregnant I've been feeling a lot of different symptoms like nausea, dizziness, hunger, a little bit of pain in my uterus and I've been so bloated but since yesterday's afternoon I haven't feel anything at all... I had a busy day and I thought that at night when I relaxed all the symptoms would go back or something and today I just woke up "normal" again just hungry... Has this happened to you? I don't wanna freak out and been going to the bathroom just to make sure there's no blood or something wrong...