It's pretty unlikely. There is no evidence thus far of sexual transmission and the presence of viral cells in semen, or other female bodily fluids, isn't really too surprising.

Viruses replicate and invade cells, injecting their own genetic material (RNA in the case of SARS-COV-2). Therefore, they get into all kinds of tissues and various cells in the body. Looking at semen or vaginal secretions to do serology tests on was a natural evolution of studying the virus b/c sexual transmission is a common transmission vector for certain viruses.

So far it only seems transmissible via aerosols, droplets, and fomites (contaminated surfaces you touch) and then gets near your mouth or nose. Part of that is simply b/c it's a coronavirus, and much like rhinoviruses, thrives in the oral route. SARS-COV-2 also has an affinity for ACE2 receptors which as found largely in the lungs and kidneys for example.

Your chances of getting SARS-COV-2 (and then COVID-19) via sexual transmission are completely & utterly ridiculous to even consider at this point. The virus will be found (ultimately) in a wide range of cells but those studies don't take priority (STD studies do). It will likely only ever be transmissible through nasal/oral routes.

The other thing is, much like I've said since the beginning b/c I was an early science skeptic on the panic, we are now much more convincingly learning that this virus has been around longer than we thought and is undoubtedly far more pervasive throughout the global population right now.

https://justthenews.com/politics-policy/coronavirus/antibody-tests-continue-suggest-covid-19-far-more-widespread-less-lethal-than-thought

--Spain released data showing 5% infected and recovered with antibodies (confirmed cases there sit at only .25%)

--NYC study reported the city shows upwards of 25% infected or already had it due to presence of antibodies.

--Santa Clara CA study by Stanford showed the infection had penetrated the population (by looking at existing antibodies) to a factor of 80x the reported/confirmed cases.

--Boston reported one showing 10% of population with antibodies though the mayor in talks with health officials believe it's higher at at least 20%.

--Chelsea Massachusetts showed antibodies in the population at a rate 16 times higher than known or reported cases.

--Miami/Dade County reported a serology antibody study that showed the population was infected at 20x the known case rate.

Why is all of that so important? Because it tells us that the initial media hype and social media storm that followed, created in a near perfect chain of events, which likely could only happen in this new tech/info/media era we live in, basically caused a complete panic, hysteria, and global shutdown over something that is now thought to almost certainly be on par with the seasonal flu (or even lower). It brings the true fatality rate down into flu zone or even considerably lower.

What we see fairly consistently across various studies is a viral penetration into the population when we look at unbiased samples of people for antibody data that is ~20-25 times that of the known cases.

This means there are far more cases that have recovered or are currently experiencing mild (or no) symptoms and as such the true mortality rate, even if the COVID-19 deaths were recorded correctl, and likely tens of thousands were not correctly attributed/recorded, is vastly lower. It's becoming obvious even to the average person using anecdotal data they see and hear everyday.