Yes, there are some unusual things happening with Earth's magnetic field, including: 

The South Atlantic Anomaly

A weak spot in the Earth's magnetic field over the southern Atlantic Ocean and South America. This region allows charged particles from the Sun to dip closer to the surface, which can damage satellites and other technology. The anomaly has been splitting and weakening, and scientists aren't sure what will happen next. 

The magnetotail

The magnetic tail is a long shadow that trails behind Earth as the sun's solar wind buffets the planet. Scientists have noticed a mystery in the magnetotail, where they've found a signature of a storm but no actual storm. 

Geomagnetic jerks

These are sudden changes in the Earth's magnetic field that may illuminate the core's thermal properties. It can take about two years to know for sure if a jerk is happening because researchers need to look at data over time. 

Other things to note about Earth's magnetic field include: 

The field has weakened about nine percent globally in the last 200 years. 

However, paleomagnetic studies show that the field is about as strong as it's been in the past 100,000 years. 

The Earth's core is made of a solid, crystallized iron structure that's under immense heat and pressure. 

The inner core may be deforming due to the gravitational pull of the mantle. 

After reading these , write what can we do to protect this magnetic field.  Write it in comment