I was diagnosed with BC 6 months ago at age 31yrs and have just finished my last chemo this morning (hurrah!). Prior to my mastectomy, I saw a fertility specialist to put a plan in place for before starting chemo as I have not had children yet. I had my mastectomy and then went through an IVF cycle with 'contributions' from my husband froze 3 embryos.
Over the months my husband and I had discussions about how we should balance my treatment with Tamoxifen with having children. We decided the best comprimise was to go onto Tamox for 2 years, then come off to try and have a child. Hopefully have a child, go back on and finish off the 5 year treatment, then try for another child. By this time I will be about 37-38yrs.
We discussed this plan with the fertility doctor and he was in full support. He thought it was a very sensible plan. I have had an initial discussion with one the oncologists (I see a different one every time!) and although they would prefer me to stay on it for 5 years straight, they felt it was reasonable to come off it after 2 years to have a child. They also said having children will not increase the risk of cancer. I am yet to discuss this plan with the most experienced oncologist. She generally is up on all the latest research so I trust her advise.
It's tempting sometimes to say forget the Tamox and just to try have a child once I've finished rad (mid-June) but I worry I'm being selfish by bringing children into the world knowing there is a risk I won't be around for them if my cancer comes back. It's very morally difficult and sometimes what the heart wants is not always what the head says is most sensible.
Few bits of info that I got from the fertility specialist: Tamox is only dangerous during the first trimester of pregnancy and that you can go back onto it after this (not sure I would take that risk), you can't breast-feed on Tamox, if you don't go into menopause you can go through another round of IVF for embryo freezing (I may choose to do this as I only got 3).
So glad I got on this forum and saw other women my age going through the same thing.