is this normal for my dog when on heat?

She will come in season every 6-12 months although if a b!tch nearby comes into season it could bring her in early. It is normal for her to swell up it is so that she can be mated.
her season will last about 4 weeks, she will bleed for around 12-14 days and is after she stops bleeding that she will 'want' to be mated and will be at her most fertile for a few days. Once she has gone off she will tell the male dogs where to go!

She may do - you'll have a better idea after her next season. The frequency of seasons can vary from 4-9 months - 6 months is only an average.
On average, seasons last 21 days and a b1tch can be ready for mating from the 2nd - 22nd day, all b1tches are different so to you need to keep her apart from all male dogs for at least 21 and preferably 28 days. A swollen vulva is perfectly normal for a b1tch in season.
Keeping entire dogs and b1tches together is a recipe for disaster and frequently ends in unplanned pregnancies - the reason why experienced breeders don't keep their own studs unless they have special facilities to do so.

a common women first warmth lasts for around a month, no longer 21 dyas as extensively theory. she will nevertheless be mated as much as and alongside with the thirtieth day, each woman is distinctive. no count if it is lasting longer than that, you may get her checked with a vet to be certain she hasn't developed pyometra, a womb an infection. definite, its tiring cleansing up after a woman yet you may attempt procuring b*tches britches for her. they arrive in all sizes and maximum canines tolerate them properly sufficient. the 1st time you placed them on, make effective she has a yummy bone to take a seat and bite directly to get her strategies off her new underclothes! No animal needs to have a warmth first to coach right into a stunning addition on your loved ones.

No this does not mean she will come into heat every 5months its just irregular at the moment as she is still young and is only in her second heat! And yes it is normal for her vagina to swell(a lot) as i have experienced myself! Dont worry it is all perfectly normal!

Since this is her second season I gather that means she was late for a month last time. No she will only come into season twice a year.

This will go on for some 3 weeks. Watch her carefully or else you'll have puppies in 60-63 days.