is the most commonly seen condition, more so in women trying to concieve.
Yes it can be one of the reason for infertility
AMH( ante mullerian harmone) indicates your egg quantity and FSH is an harmone for predicting the quality of egg. However these test are not the definitive test. AMH decreases with increasing age.
Any treatment is unlikely to increase your AMH level significantly. Your medications are appropriate and do continue with the treatment with your doctor. My advice is to start treatment by end of 3rd month and not loose much time as endometriosis can recur.
Hope i have answered your question.