Suggest Treatment For Difficulty In Conceiving

I am 25 years old. I had a stem cell transplant for Hodgkin s lymphoma in December 2013. When we went in to possibly harvest eggs, they told me it was too late because they only saw one extremely small follicle. I thought i went through menopause because I stopped getting a period and had many hot flashes daily. This February I was told I am in remission. This past month I had a very light period and 2 weeks later had a more normal period with cramps and more bleeding. My obgyn told me she cannot confirm or deny I ve ovulated but getting a period is a good sign. I ve recently taken an at home ovulation test and it was positive for an LH surge. I m just wondering if my body could just be going through cycles even though I have no eggs or if I should have hope that I can still get pregnant. It is consuming m mind lately because my husband and I want to get pregnant on our own so bad. Looking for advice. Thanks.