A little in out would be great?'!?!?

Amy
Hi girls so I'm 6 weeks gone, in my 2ww I was on metronidazole for bv, not thinking anything of it, iv been looking back today and realised I shouldn't of taken it!! It can do affect growth of baby and bring on premature labour?? So now I'm worried should I contact my doctor or is there nothing they can do now??