Have I still got a chance?

OK so my husband and I have been DTD every other day since AF finished.. last night & night before we also DTD as I'm in my fertile window. So... today I get a + opk but just tried to DTD and he can't come due to the pressure of it all... would we still have a good chance as we has DTD the last 2 nights?? Sorry a little embarrassed to be asking x