Why do you think Rubella result will create difficulties?
IgG and IgM above positive reference range indicates that you are immune to Rubella, if it would have been less than the reference range, that may have caused some conceiving problems
Next Steps
Check for other problems and try to regulate your conception time and cycle
Health Tips
Check foe the common cause like PCOD/PCOS. A simple abdominal USG can help out