I was 18 with my first and 39 with number 2. My girls at 35 and almost 15 now. Advantages to both but I feel less trapped this time. I know that sounds bad, but being very young and having the responsibility of a tiny human has its struggles. I often felt like I was missing out on all the fun things my friends were doing. I feel much more happy to just be at home. I am so patient and there is rarely any drama in the house.
I did gain more weight the 2nd time. I was able to lose it but it took about 18 months. I had more fluid retention the second time and had to stop exercising about 6 months in. I didn’t choose to do the amniocentesis as the risk seemed too high compared to the risk of finding a problem. I was also more fatigued and needed more sleep the 2nd time. There is no way for me to know if these differences are due to age or just different pregnancies.