BC/Pregnancy/Tamoxifen/Breastfeeding

Hello ladies, 

After some advice, but also to share a happy ending to give hope to those that might need it.

Diagnosed in 2016 with aggressive breast cancer, stage 3, aged 25. Went on to have fertility preserving treatment (but no luck), chemo, lumpectomy and radio.

Went on tamoxifen 1 month after my surgery in Jan 2017. Did 5 years on the little blighter (tamoxifen!) Was given permission in Feb this year to take a break and start a family in May once 3 months of tamoxifen out of my system. Now at this point, I was unsure whether I could...

Here's the hope/happy ending: got pregnant first month of trying!! Currently 7 weeks- early days I know, but the fact that I'm fertile is a blessing in itself. I feel extremely lucky, grateful yet bloody frightened!

I'm not bragging here, or rubbing it in others' faces that may be struggling to concieve after BC, but I know how many hours I spent trawling the Internet to find positive stories about pregnancy after BC, so I want this to be one of those positive stories for someone who, like me, may be scrambling through every article they can find to see if it is possible xx 

Long post... but I'd like to know if:

1. Anybody out there has had success with breast feeding after treatment similar to mine, a.k.a. the 'belt and braces' trio! 
2.  If you took a break from tamoxifen, and are supposed to go back on it after baby arrives, how long did you wait to pop your first pill (obvs breast feeding and tamoxifen is a no-go)

Thanks so much in advance. 

Sending lots of love to you all xxx