Hot flashes

I found out im pregnant with my second 4 tests confirmed it lol first doctor appointment is next week but has anyone experienced like hot flashes i feel like its summer i get so hot and when i get hot i get mood swings is this normal never had any signs or symptoms with my son this time around i am tired all the time hot off n on and moody as hell. According to my last period i should be 4weeks 4 days along. But not comfirmed yet