Can you get a clearer picture? It isnt possible to make out any identifying details like leaf shape or flower/seed form. And put a sheet of white paper behind a stem to avoid the confusing background. An indication of scale is also needed.

Until more information is forthcoming my best guess is Veronica arvensis.

3 to 4 inches high

I think that's it. Thank you!

Note that you also have Euphorbia maculata growing the same area..........another pesky weed.