You are within your rights to believe that not all things happen according to God's will.
However, you can say it as often as you wish and still be wrong when you argue that a miscarriage is not an abortion. Perhaps it is the word, abortion, that offends you. However, an abortion is a voluntary termination of pregnancy. The voluntary removal of an embryo or fetus from the uterus in order to end a pregnancy.
While a miscarriage, mis-carry of a embryo or fetus in the uterus, is an involuntary abortion.
Miscarriage
Loss of the fetus before the 24th week of pregnancy or viability (the ability to survive outside the uterus without artificial support).
The medical term is spontaneous abortion. The majority of miscarriages occur in the first 12 weeks of pregnancy, and may be mistaken for a late menstrual period. Miscarriages may occur because of
chromosomal abnormalities or developmental defects in the fetus, or because of severe illness, exposure to toxins, or an
autoimmune disorder in the mother. Miscarriages later in pregnancy may be caused by
genetic disorders,
cervical incompetence, a defect in the uterus, or large uterine
fibroids. The symptoms are heavy bleeding with cramping. Slight blood loss with severe pain can be a symptom of either a threatened miscarriage or
ectopic pregnancy. Miscarriages are classified medically as different types of abortion. In a threatened abortion, the fetus remains alive in the uterus. In an inevitable abortion, the fetus dies and is expelled from the uterus. In a missed abortion, the fetus dies but remains in the uterus. A
pelvic examination and
ultrasound scanning may be performed to assess the pregnancy. If all of the contents of the uterus are expelled, no further treatment may be necessary. Otherwise, a
D and C may be performed. Missed abortion requires a D and C or
induction of labour depending on the duration of the pregnancy. Rh-negative women are given anti-D (Rho) immunoglobulin to prevent complications related to
Rhesus incompatibility in future pregnancies. (See also
abortion.)