Does my lower back pain have anything to do with my abdominal pain?

It's worth noting that urinary tract (bladder or kidney) infections can also cause both back and abdominal pain, as can other conditions involving internal organs. If the pain is unusual for you, I'd suggest getting it checked out.

Very well could be yes.

Types of low back pain
In the US, low back pain is one of the most common conditions and one of the leading causes of physician visits. In fact, at least four out of five adults will experience low back pain at some point in their lives.
Ironically, the severity of the pain is often unrelated to the extent of physical damage. Muscle spasm from a simple back strain can cause excruciating back pain that can make it difficult to walk or even stand, whereas a large herniated disc or completely degenerated disc can be completely painless.

The causes of low back pain can be very complex, and there are many structures in the low back that can cause pain. The following parts of spinal anatomy can cause pain:

The large nerve roots in the low back that go to the legs and arms may be irritated

The smaller nerves that innervate the spine in the low back may be irritated

The large paired lower back muscles (erector spinae) may be strained

The bones, ligaments or joints may be injured

The intervertebral disc may be injured

It is important to note that many types of low back pain have no known anatomical cause, but the pain is still real and needs to be treated. However, usually low back pain can be linked to a general cause (such as muscle strain) or a specific and diagnosable condition (such as degenerative disc disease or a lumbar herniated disc).

This article provides a review of the most common types of low back pain and related symptoms. The vast majority of lower back pain conditions will get better with time and can be addressed with conservative treatments, such as osteopathic or chiropractic manipulation, physical therapy, pain medications, etc. However, it is important to note that there are a few symptoms that indicate the need for emergency surgery.

probably. u just probably lifted something heavy, lost control of it, tried to steady it with your back, and hurt your back, so then before you could feel back pain, your brain switched ya to stomach muscles.