If you have sex
only with women, don't worry about LGV.
In the entire US, there have been only a handful of cases in women and straight men in the past 20 years. If you have sex with men, especially if your rectum has been exposed, the risk is higher. The blood test (IgG) is no longer recommended; the main test is PCR on swab from exposed site, e.g. rectum. If that's negative, you don't have it.