Disappearing symptoms

Katie
Does anyone else get completely freaked out by sudden disappearing pregnancy symptoms? I am 7 weeks 6 days now and today I feel fine but normally very nauseous and very very tired. Same thing happened at about 5 weeks but my symptoms came back after a few days, full force. I also started taking vitamin b6 a few days ago on the advice of my md to help with the nausea, maybe it's starting to take effect. It's like, hate the nausea but so relieved to have it.