The first thing that would spring to mind is a kidney stone. Kidney stones are common amongst men and women, and left untreated could cause lower left groin pain. However, this pain would often be towards the back, considering the location of the kidneys.
Another common cause of a problem like this is IBS, something that many men and women suffer with without even realizing. Even a colon spasm could be the issue, something which you should definitely see a medical health professional about.
Are you sporty? You must not rule out an injury when it comes to constant pain. Is it possible that you have pulled a muscle or moved awkwardly whilst playing sports? If so, is it a pain that is gradually disappearing?
You shouldn’t immediately worry when it comes to issues like this. People can be too quick to jump to conclusions when they read things online, so the best thing to do is to get in touch with your doctor. Your doctor will be able to provide you with the very best advice, given their extensive knowledge, equipment and ability to ask you all the questions that they need to ask you.
Don’t worry. Whilst this kind of pain can sometimes signal some rather harmful problems, in relation to the testes for men, and the ovaries for women, you can never be sure without seeing your doctor. So get going!