if first delivery is normal can second be normal?

The answer is definitely yes.
1. What is the difference between the second normal birth and the first normal birth?

The second vaginal birth is faster
According to the sharing of mothers who have had a second normal birth, the labor time of the second birth will be shorter than the first time. Usually a labor will last from 6 to 24 hours. But for the second birth, the labor time will be shortened from 8 to 16 hours. But there is still a mother who gave birth to a second child with great difficulty.
When there are signs of labor such as: leaking amniotic fluid, pink mucus in the vagina or pain when the abdomen is hard ... you should go to the hospital urgently to prepare for your labor. If there are no signs on the due date, you should stay calm to avoid worrying about affecting the fetus. Instead, go to the doctor to check, if you find any abnormalities, you will receive an appointment from the doctor.
The second vaginal birth is less painful
Is the second vaginal birth painful? The answer is definitely yes. Normal delivery, whether it's the 1st, 2nd time or even the 3rd, 4th time, women still have to overcome labor pains - uterine contractions lasting many hours. The cervix still has to open from 0cm to 10cm to be able to give birth, all mothers have to make the same perineal incision. So vaginal birth is painful every time, and that pain is likened to the pain of breaking 20 bones at once.
However, obstetricians and gynecologists agree that: Pregnant women who give birth to a child (second child) are always easier to give birth than give birth (first child). Only those mothers who have sparse births, ie the second child gives birth more than 5 years after the first child, the second vaginal birth will still be as painful as the first vaginal birth.
In addition, because the mother's body structure has expanded and is much more supple, the mother has also experienced in pushing and breathing during childbirth, but is no longer clumsy, so the process of childbirth is no longer same pain as before
Second vaginal birth hurts more than usual
Second time vaginal delivery hurts less than the first time, but the pain after giving birth is twice as bad as the first time. This is the truth that women who have given birth twice have concluded.
Every woman after giving birth has to face pain in the womb. The reason is that after giving birth, the uterus is dilated, so they need to contract to return to their old state. In addition to the new contraction, the excess blood and fluid inside the uterus come out. In the second normal birth, the uterine muscles are much weaker than the first time, the uterus is also more dilated. Therefore, it is imperative that contractions be stronger and more frequent to help the uterus quickly return to its original normal state.