2nd pregnancy!

Does anyone experience the same thing as me; this is my 2nd pregnancy at 20 weeks while my first born is exactly 12M now. I don't get the morning sickness often compared to my 1st pregnancy. And i am quite paranoid thinking if my pregnancy is doing well, baby is growing well or not because what i learned is morning sickness actually a positive sign that pregnancy is doing well. My last scan was 8 weeks, and the last appt was 14 weeks only able to hear heartbeat but no scan being scheduled. I am paranoid! So is it okay to not have morning sickness 90% of the time?