Anyone lost their preg symptoms but still continued on pregnant?

Aby
I'm 7 weeks, this past week I have had severe nausea, gas,
Dizziness and exhaustion that's had me in bed rest! All of a sudden today I feel much better, not completely myself but no nausea or gas and i have a lot of energy! Past 2 days also had some very occasional and mild cramps! No bleeding and have my routine appt with dr on Monday! Just wandering if anyone else has experienced this?