Repronex is a trade name that contains menotrophin - a combination of follicle stimulating hormone (FSH) and luteinising hormone (LH). Regulators and manufacturers have prohibited its use during pregnancy. In fact, before it is used, careful examination needs to be made to rule out pregnancy.
The prohibition on the use of menotrophin is not because it can harm the foetus but because there is no evidence of its safety if used during pregnancy. Because of ethical reasons clinical trials to establish its safety during pregnancy cannot be conducted not to mention that once conception occurs there is no further need to administer menotrophin.
Theoretically, based on its mode of action, menotrophin if given inadvertently during pregnancy should not cause any problem.
I suggest that as a matter of abundant precaution you go through more regular, periodic check up of the status of fetus. In medicine, we never say 100%, but I do not think there will be any problem.