Uterine Fibroids. Issues or diseases.

I am 35 years married female got aborted on Sept1 medically. During the follow up USG I was diagnosed with multiple uterine fibroids. My next period came normal after 4 weeks of abortion but I started bleeding again once the period stopped. The gap between second bleeding which was heavy was only 5 days. My doctor prescribed me Lupron injection one each month for the next 3 months to treat fibroids and related bleeding. She also prescribed regestrone tablets for 21 days in the first month of lupron dose. Under the stress of my health, I said yes for the treatment but I am now feeling I don't want to go for second dose of lupron as this drug has known side effects. If I don't go for second injection next month will it change my body for bad or I can quickly return to normal. I had no other issues or diseases.