Symptoms just leave?

So I’m five weeks and 3 days and for the last few 3 weeks I was just feeling so crappy and yesterday I was of course feeling bad and very tired and now today I feel better like I have more energy. I know I should be happy but now I’m like wait is everything ok? Nothing else out of the ordinary no cramping no bleeding none of that. But have any of you ladies had this happen? Where your symptoms just leave or take a break? This is my second pregnancy and a lot different from my first.