Does stress cause irregular periods and pain during ovulation?

Hi I am 36 yr old and have a 5.5 yr old girl . My husband and I have been trying for a baby for two months and I have had irregular periods for about 4 months . Could be stress ? A little pain when ovulating . Had a /scan in December came back normal . Had a internal u/s in nov dr said it was normal but now reading results says I have a heterogenius myometrium ? With no fibroids ? Had another scan internally quickly at gyno who said I may have adenmyosis. I have been on once cyxle of 50mg chloymid and it produced some follicles but not too many . I had my ash and Fch ? Done and they were good the dr said and my husband semen analysis was also good . I am worried about whether I could have another child as we both want one and if Ivf is successful with this prognosis ?