Thanks all for the replies. Really good advice from all of you.
1.
After scaring my paranoid self by Googling the issue and my wife telling me to stop poking the area, feeling for something that isn't there, I made an embarrassing trip to my Doctors yesterday. Gladly all fine. Phew - I know it's paranoid, but I do worry.
Upside was that the Doc was also an avid cyclist who pointed out a lot of the above comments. Padded shorts he said was the way to go. A point made by a lot of you. He also tried to talk me into buying "proper" Road Bike.
2.
The sensible, logical side to me realises this only came on when I started cycling again and realise I have done too much. Up to 80 miles in a week from the odd 10 miler is way too much. Took a full week out of the saddle and just did a one way trip yesterday and today. My lay off coincided with the really wet weather, which was a bonus. Making some adjustments to the saddle position made a big difference also. Wore the leggings without underwear as suggested.
I noticed that I seem to be stretching forward and putting a lot of weight on my hands. My arms are locked straight when on the bars and I feel as if I am leaning my weight forward. I've had it confirmed that the frame size is Ok for my height, so I have ordered a shorter handlebar stem, so I'm not reaching too much and leaning over the seat. It wasn't expensive and if it works, will be a good investment. I reckon it's worth a go until I find the right seating position.
I will persevere with the Brooks for the moment. I need to order some of that Proofide stuff to help the seat bed in. I seem to be slipping around a bit less, but this may be in my head. If it's still uncomfortable in a few weeks, I will definitely pay a trip to a local bike shop and get a saddle from them. They have a proper bum measurer. Something I think I should have done in the first place, but you live and learn.
Next order will be padded shorts. Are they used like padded underpants, with something on top or just them? What is normally worn over them in Winter to keep the legs warm? A pair of soft shell trousers you normally see in hiking shops, or do you go for the full length, long padded leggings? Separate Summer / Winter leg wear? I know it's probably a case of personal taste, but your thoughts would be welcome. I intend to spend a bit more than I did on the Aldi ones
Thank You all again.