Doctors are advising women to take care using the menstrual cup, after a user developed temporary kidney problems because the cup was misunderstood.

The patient, in his 30s, had been experiencing intermittent pelvic pain and blood in his urine for months, but the symptoms were not connected to the menstrual cup, which is used to catch monthly blood flow.

Although a very rare, a poorly deployed cup inside the vaginal passage can put pressure on other nearby structures, such as the ureter – the bladder -carrying tubes, according to danish doctors, were cited in, according to the danish doctors. British medical journal,

It is important to select the appropriate size cup, as well as inserting it properly, the doctors have insisted.

The patient made complete recovery, but doctors have warned: “The correct position, with choosing the right cup size and size -is important to prevent negative effects on the upper urinary tract.

“The menstrual cup can be purchased and used from a health professional without clinical advice, which emphasizes the importance of detailed and clear patient information material.”

Re -purpose and durable, menstrual cup is an alternative to sanitary pads and tampons.

They are made of soft, flexible silicon or rubber and, once correctly in place, 20 to 30ml – about two tablespoons – of about two tablespoons – blood.

Depending on the flow, they can be removed, emptied, washed and resumed every four to eight hours.

Different cup models can offer a better fit according to the person.

There are small size options for girls and younger women who have not given birth to the child.

If you are a virgin, you can still use one.

The menstrual cup can be difficult for users for the first time, especially when it comes to removing.

A recent survey of 530 young people Many people found it difficult to remove the menstrual cup in their first attempt, some said they had to ask for help.

Once inserted into the vagina, menstrual cups make a suction seal to prevent any seepage of blood.

When removing, users are warned not to pull only on the stem. Pelvic health expert physiotherapist Dr. Kate Laf says, instead, squeeze the lower part of the cup to break the seal and close it.

She says that women may be taken to be accustomed to using some menstrual cycles, and a cup of wear stress should not be hurt.

He told BBC News: “Generally, they are a very safe product.

“When it happens correctly, you should not feel it.”

Cups of menstruation differ in size, shape and perseverance, so Dr. Laf recommends shopping around to find the person matching your needs.

If you have a recent contraceptive coil placed in your womb, then a very small chance It can be disorganized, or even removed, By suction.

If the threads may not be located, or a woman feels that her coil has moved, the manufacturers recommend using additional contraceptives and a healthcare professional for advice.

Menstrual discs are similar to disc cups, but are worn high in the vaginal canal just below the cervix.