Hi, and thanks for your medical question on eHealth forum
With a mass in uterus and lumps in breast, it is important that you have an abdominal Ct and mammography of breast to rule out cancer.
Though endometriosis too can cause a lump in uterus which can form a huge clot and not be pushed out, the lump could also be a fibroid or a cancerous tumor.
Since you have been feeling so unwell, consult your PCP and voice your concerns. If this gynecologist is not listening, maybe you can get a referral for another or for a cancer specialist.
It is difficult to comment beyond this at this stage. Hope this helps. Take care!
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