Hi,
My experience is about the same. Am at the start of week 8 too. Had bad nausea and headaches for the last 2-3 weeks but symptoms seem to have improved a lot suddenly yesterday. Also wondering if there’s anything I need to be concerned about.
It comes and goes, as long as you don't feel pain or have bleeding. I had a few good days during my week 8 too and wondered the same thing - but had an ultrasound yesterday and baby was growing well! Enjoy those "off" days :)
As long as you do not have any bleeding, painful cramps, it should be ok & pretty normal.
I had morning sickness for only a few weeks too & then it subsided. My breasts are still sore and tender till today - 20 wks +