Second pregnancy so different

I have a history of miscarriage so of course I'm quite anxious. I'm 4 weeks pregnant currently. With my first child I had severe cramping on and off and a metallic taste for two days. After that, the morning sickness hit at 5 weeks. This time around is different. I don't have any cramps but the metallic taste has lasted all week and I'm suddenly so exhausted! The tests keep getting darker so it's reassuring. Was your second or third pregnancy different? Harder? Easier?