I was diagnosed at 36 too. Had Grade 2 IDC and 1x positive lymph node. Had surgery , chemo then rads and my treatment finished January this year. I started Tamoxifen in December but my hot flushes had already started in the November as the chemo had sent me into the menopause. I was offered egg freezing (or whatever they call it) but I already have a little boy and was not planning any more. I take the Tamoxifen at bedtime as it does make me feel a bit dizzy. When I get up to the loo in the night I feel a bit whoozy and at the beginning felt nauseous, but that stopped. I get calf muscle cramps every morning but I also have Multiple Scelrosis so it could be that rather than the Tamoxifen. I have the Wockhardt brand which some people find horrid but I don't have any real complaints. The 12 months post diagnosis will be hard and will pass in a blur but you will feel better this time next year, honest.
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