Sbould i worry about fibroid cysts? i was told i have them and they cause heavier periods

Other than potential: For heavier periods and growing , you should not. Your doctor I am sure will monitor you for worsening periods and or other symptoms that may indicate the need for further treatment.

Maybe: Fibroids are only a problem if they cause symptoms. If not, there is nothing to worry about as over 99.9% are not cancerous. Common symptoms are pressure on bladder or rectum, pain with sex, heavy and/or painful periods. Sometimes the symptoms can be treated medically. When that is ineffective, surgery is often helpful.