That much comb and wattles at 14 1/2wks, you most likely have a cockerel. It's hard to tell with photos, but if you have another BR that you know is female - look at the color of the feathers - the cockerel should be lighter colored.
Fighting isn't always a sign that it's male. The girls can...
It's hard to see:)
Do the best you can to keep ointment any prolapsed tissue.
Provide her with plenty of water (dehydration makes it harder to contract the tissue) and offer some extra calcium.
The biggest thing is to see if she is pooping - you may need to place her on a puppy pad or paper...
Hi @Lover of the chickens :frow Welcome To BYC
Photos would be helpful.
How long has it been since she pooped?
General care for a prolapse would be soaking in an epsom salt bath, dry, apply some hemmoriod cream to help reduce swelling. Gently push the tissue in to see if it will stay...