Second Time around...missing symptoms

I’m 5 weeks pregnant and I’m kind of worrying myself crazy. My first pregnancy I had horrible morning sickness from the time I found out I was pregnant until I was 7 months along. My daughter is 3 1/2 now, so it’s been awhile since I’ve been pregnant but other than some mild nausea when I get hungry, and a little cramping last week I’m not having any symptoms of being pregnant. I’ve been a bit fatigued here and there but with my work that’s not really something that’s out of place. I guess I’m just worried that something is wrong. Has anyone had this happen and the baby is ok? Am I just being paranoid since it’s so early. My first appointment isn’t for 4 more weeks.