If you only have a female dog the practicalities can be easily managed. She will likely bleed, so you will need lots of towels and washing powder, be prepared to do lots of laundry! You might need some dog pants – I made Winnie some out of fleece fabric and they did the job very well, and looked quite fetching to boot! Make sure they are comfortable and washable! If you do take her out for a walk, maybe avoid the places she will want to run, and keep her on a lead as there are entire males out there that will sniff her out and if they meet up several hundred yards from where you are, it is unlikely you will be able to interact before the males urges have taken over. If you have access to a completely safe, enclosed area to exercise your dog off lead, they will appreciate this and you will too, otherwise all the pent up energy will likely manifest as mischievousness at home! An extendable lead might help her have some independence on walks where she is used to being off lead.
If you have an entire male dog in the house you will need to be extra vigilant – not just because your girl is far too young to have puppies, but you may have dogs that are related and a pairing will be completely in appropriate between them. My advice is to get a stair gate or two! It is essential to separate your dogs while in the home, but a stair gate allows them to see each other. Separating them as much as you can is the fairest thing for your boy. I also used Skullcap and Valerian tablets to keep both dogs calmer and it seemed to work for us. If you find yourself in this situation, stick with the slight inconvenience and break in routine, it doesn’t last long and in the long run will far better than the consequences of not being super vigilant during this vulnerable time for your girl.