Have a rather "high maintenance" colleague who insists of having everything in the office just the way she likes it (lighting, heating, noise) and who is quite insensitive to other people (my DS has high functioning autism at main stream school and she insists on calling him "disabled" 
).
She is obsessive about her health, every day there is a new health concern - to the point I do (seriously) wonder if she has health anxiety.
She can be quite sweet (albeit hard work). Another colleague and I encouraged her last year with internet dating and she has now moved in with someone. Before this she was single and panicking about having left it too late to start a family - she is now 40 and both me and my colleague try to be sensitive about her concerns about her age, know more about her menstural cycle that our own and know she stopped taking the pill last month. She is very self absorbed.
She isn't pg as she made rather a fuss about her period arriving last week insisting she was having an MC, lying down, crying etc. We try to be sympathetic but often the sympathy is minimal as we are trying to work and every day there is a new health issue.
I am early 40s and my kids are practically grown up and my colleagues kids are too and she is early 50s (we were both working single mums) and going through the menopause - and has joked about being "past it" in relation to having kids which was met with collegue storming around the office slamming things around and saying "well fucking thanks".
My SIL has just told us she is PG with her 1st baby which is very exciting but I cannot dare say anything at work as am worried about colleague's reaction.
How do I/we manage this? I want to be supportive but also want a to be able to get on with my job and if she does (hopefully) get pregnant I cannot begin to think what work is going to be like having to hear about every tiny detail whilst trying to work.
Should we just ban the topic of reproduction which includes hearing all about her periods ?