estrogen blockers

[PMK]

Hello all,
I stopped chemo in November due to neuropathy and continued on with herceptin
and perjeta once every 3 weeks. Thankfully, my last scans were stable. My onc said that there is not enough evidence about estrogen blockers and if they should be used without progression of disease. So far, I have not used them, but she said it was my decision.
With my cancer being estrogen driven I am not sure if this is the right decision. I am 45 years old and this past week Im feel really pre-menstraul. I have not had a period since my first round of chemo. I am scared of having a period, and what that means about estrogen in my body.
Has anyone experienced this? Thanks
Patrice
Dx Stage IV Her +, April 2015 with collapsed lung-mets to lung, liver, questionable bone, and some nodes
Chest tube placed to relieve 5 liters of fluid in right lung
1 round of cyclophosphamide/doxorubicin until tumor biopsy confirmed Her2+
May 2015-began taxol/herceptin/perjeta
chest tube removed
3 lung taps to remove continued fluid problem and shortness of breath
September 2015- plural tube placed in lung
Continued with taxol/herceptin/perjeta
Scans slowly improved
December 2015-discontinue Taxol due to increased neuropathy in feet and hands
February 2016-plorax drain removed, fluid issue resolved. Bottom of right lung remains collapsed, but feels ok.
Continuing on herceptin/perjeta
(lost 5 yr. old daughter to cancer in 2011, after a 2.5 year battle)