Antibiotics increasing chances of conceiving?

Amanda • I am 23, engaged to be married, our first is a beautiful 5 y/o angel in heaven, We lost her April 2015, miscarried our second October 2014, we are waiting for our rainbow after the storm. (Ttc 2yrs)
Is this true? I am currently on antibiotics for 5 days.....anyone actually concieve while on antibiotics?