There’s no medical reason why endo or PCOS should affect how you give birth.
I’d concentrate on things like prognosis, treatment, and fertility. Questions I’d be asking are:
Where did you find the endo? How severe was it? did you remove it? these questions are important, as the severity of endo usually dictates how much it affects fertility, as does where it is found eg endo affecting the ovaries can affect fertility. It’s also good to ask if it was all removed, and if not, why not, and if they will recommend further surgery to remove it.
When should I start TTC? (usually, surgical treament of endo improves chances of conceiving for around 6 months, so a lot of specialists advise TTC within this time frame).
Will you consider prescrbing fertility drugs like clomid? (these can boost chances and are sometimes prescribed after surgery to give you the best chance possible)
What treatment do you suugest long-term? One issue with having borh endo and PCOS is that the treatments are opposite: with endo you are aiming to stop menstruation ideally, with PCOS, you are aiming to regulate it. This can cause issues with treatment so is something to ask
Will they see you at intervals to check-up on your progress? Both endo and PCOS are chronic conditions with no cure (endo can and frequently does return after surgery, and even a hysterectomy is not a sure-fire ‘cure’) so it’s a good idea to be monitored to make sure it’s not returning, that your treatment is working, etc)
Are there any alterantive therapies I can try (diet can really help with endo, as can acupunucture, and nerve-blocking injections)? Can you refer me to someone specialising in them?
What can I do for pain-relief while TTC? (as obv you are very limited in terms of painkillers)
Otherwise, I can answer some of the questions you’ve listed for you:
Re birth: as I said above, there is no medical risk to either a c-section or natural delivery with endo or PCOS, and no reason to choose one over another for this reason generally speaking (exceptions would be if you get a lot of scar tissue or have skin endo (where it grows through the skin) as in these (exceptionally rare) cases endo can attach to a c-section scar and cause issues
Metformin: this is used to treat PCOS all the time and is not only for women who are TTC; my friend was taking it to regulate her periods.
Ovulation/menstrual pain: surgical treatment of endo can see symptoms worsen for up to 6 months after surgery (so, pain, bleeding, etc). After this they should settle if the surgery has been effective, and you can expect to see an improvement for up to 5 years on average. It varies woman to woman though: my first op only improved mine for 9 months, I’ve since had another op and 16 months later I’m starting to get twinges and suspect it’s coming back. Whereas some women will see relief for 10 years
Does endo continue past childbearing years: this is difficult to answer. There is no cure for endo (beat a sharp retreat from any doctor who suggests a hyst is a cure as it isn’t; endo can and does recur even after a total hyst, and the pros and cons are extremely complicated (I can go into more detail if you’re interested)). Generally though endo will go when you reach the menopause, as most women experience their pain and symptoms around menstruation. BUT, it depends; if for example someone has very severe endo involving other organs, or sever adhesions, or issues such as endo growing through the bowel, these things an still cause issues post-menopause. I would stress though that these are severe cases, and you are unlikely to be in that situation.
If you want any info on endo, please let me know. I was diagnosed 3 years ago and made it my business to find out as much as possible, so I can help with most common questions/concerns.
Hope This Helps