If pregnancy occur after ovulation then :-

Options

A. Progesteron level rises in blood
B. Secretion of FSH & LH increases
C. Corpus albicans convertion corpus luteum
D. All of above

Answer

### Step-by-Step Solution:

1. **Understanding Ovulation and Pregnancy**:
- Ovulation is the release of an egg from the ovary. If fertilization occurs after ovulation, it leads to pregnancy.

2. **Role of Progesterone**:
- After fertilization, the body increases the production of progesterone. This hormone is crucial for preparing the uterine lining for implantation of the fertilized egg.

3. **Thickening of Uterine Lining**:
- Progesterone helps thicken the endometrial lining of the uterus, creating a suitable environment for the developing embryo.

4. **Hormonal Changes Post-Pregnancy**:
- Along with progesterone, there is an increase in other hormones like estrogen. However, the primary focus here is on progesterone.

5. **Impact on Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH)**:
- After pregnancy, the secretion of FSH and LH decreases. These hormones are primarily involved in the menstrual cycle and ovulation. Their levels drop to prevent further ovulation during pregnancy.

6. **Corpus Luteum and Corpus Albicans**:
- If fertilization does not occur, the corpus luteum (which produces progesterone) degenerates into corpus albicans. However, in the case of pregnancy, the corpus luteum is maintained to continue producing progesterone.

7. **Conclusion**:
- The main outcome of pregnancy occurring after ovulation is the rise in progesterone levels, which is essential for maintaining the pregnancy.

### Final Answer:
If pregnancy occurs after ovulation, the primary consequence is that the **progesterone level rises**, which is crucial for supporting the pregnancy.

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