**Core Concept**
Bilateral cornual block, also known as cornual obstruction, is a condition where there is a blockage or obstruction in the cornual region of the fallopian tubes, preventing the egg from being released from the ovary or fertilized sperm from reaching the egg. This condition can lead to infertility and is often diagnosed through imaging studies such as hysterosalpingography (HSG).

**Why the Correct Answer is Right**
The next step in managing a patient with bilateral cornual block is to perform a laparoscopic tubal cannulation or a hysteroscopic balloon tuboplasty to try and open up the blocked tubes. This procedure can be performed under general anesthesia and can help to improve fertility outcomes. The procedure involves inserting a balloon through the cervix and into the blocked tube, and then inflating the balloon to try and open up the blockage.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not address the underlying cause of the bilateral cornual block. While antibiotics may be used to treat any underlying infections, they will not address the physical blockage in the tubes.

**Option B:** This option is incorrect because it is a more invasive procedure that is typically reserved for patients who have failed less invasive treatments. Laparoscopic surgery is a major procedure that carries more risks and complications than a hysteroscopic procedure.

**Option C:** This option is incorrect because it does not address the specific issue of bilateral cornual block. While fertility medications may be used to stimulate ovulation, they will not help to open up the blocked tubes.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that bilateral cornual block is a common cause of infertility in women, and hysterosalpingography (HSG) is a useful diagnostic tool for identifying this condition. Treatment options should be individualized based on the patient's specific needs and circumstances.

**Correct Answer:** C.