Xray and ttc??

Shauna • Wife and mother of 4 beautiful kids, trying for one more. :)
Hubby and I are bd this weekend as ovulation is near...but I have to have an xray on my tailbone next weekend... will this be ok? I'm wondering if we should wait til next month.... which made hubby sad when I told him, but I don't want the xray to have negative effects. What do y'all think?