Loss of symptoms?

In week 8-9 now, and felt that symptoms have alleviated over the last 2-3 days. Prior to this, symptoms of slight nausea, bloat and fatigue started around 6-7 weeks. At this time, the symptoms are supposed to get stronger and peak. I understand that symptoms come and go. But 1) how long does it go for it be to too long. When do we seek medical attention. 2) is it usual if the symptoms go (as early as first tri) and never come back. For context my last check up was at 7 weeks And all stats are normal including heartbeat. I also had an earlier missed miscarriage before this. Ps I’m concerned about loss of symptoms for days as opposed to having no symptoms from the start. There seems to be no clear answers in old posts #firsttimemom Thanks all!