Is Letoval Right Medication To Conceive After Ectopic Pregnancy?

i am 24 years of age, i had an ectopic pregnency which i had to have my left fallopian tube removed in 2006, my periods returned to normal and we have now been trying again for a few months but had no luck so far, Doctor advise me to take Letoval 2.5mg for 2 cycles in D2 to D5 2tabs/day at night . if not pregnancy occur then have to test HSG. Is it right? please reply soon, many thanks