Vanae Holland

Hi all,
Well I'm here again with another question!
I went ahead and purchased the 4/5 year old possibly pregnant sow and will be picking her up next weekend. BUT, the lady who sold her to me just emailed me and said that she thinks she got the dates messed up and she may be due in December instead of February.
Then, just got another email from her saying:
The mama pigs bottom is getting swollen - I'm wondering if I off on my dates - again.
We should have written it down on the calendar - we have so much going on with kids and grandkids it hard to keep track however I think we learned our lesson - we don't remember very well. She was so much bigger with the last bunch like dragging ground with her tummy so maybe its something else.

Any clue as to what this could be? I figure either she's much closer to her due date than thought, or maybe she's got something wrong, but I can't find anything online in regards to this.
Thanks!!!

Hi all,
So I just put down a downpayment (they are asking $250) on a mama AHG, but now I'm kind of worried because I think I acted too impulsively. The sellers say that she is 4-5 years old, and "doesn't see too well". She's had 3 litters and is probably pregnant again since she has been around a male and isn't going into heat anymore.
SO, my questions are:
Is a 4-5 year old mama pig too old to buy?
How many litters can an AGH have in her lifetime?
Will she be able to be nice to other pigs, as I am planning on buying a younger pair as well?
Is it a bad sign that the mama pig is only 4-5 years old and already has lost most of her sight?

Thank you so much everyone. Pig are new to me, and I am SO excited to dive into it.
!!!