Been almost a year since her first heat!

Question
QUESTION: Hi- Our 21 month old female bulldog, Brodie, went into her first heat when she was about 10 months old.  She has not gone into another heat since then!  She has no health problems, lives indoors, and is such a good dog!  She is a little swollen, but it hasn't increased or decreased in the past 6 months.  We are concerned because my cousin has an English Bulldog which was born 3 days before Brodie (they aren't related) who got her first heat 3 days before Brodie, had her 2nd heat 5 months later, and is getting ready to go into her third!  Thanks for any information you can provide.
ANSWER: Not all dogs are the same obviously. Your dog may never come in heat again. She may be having silent heats that you aren't even aware of. If you don't have a male in the house, chances are you'd never know.

You might have her thyroid tested just to rule that out, but this isn't uncommon at all, especially with Bulldogs.

Sometimes females get "dorm bound" living in the same house, in the same routine, without other dogs coming in heat or a male around. Try changing dogs with your cousin for a month and see if this will "reset her clock". I used to have a dog that would only come in heat if I took her for a 2 hour car ride every 6 or 7 months.

---------- FOLLOW-UP ----------

QUESTION: Do you think we can breed her?  We were planning on it, but are still not completely set on it.  

I don't think she could be "dorm bound" because we've actually moved twice in the past 6 months we recently bought our home, where previously we were renting.  Also, my cousin's dog stayed with me for about 4 days while she was in her 2nd heat.  About once a month, she is around other dogs including family members.  She gets walked regularly, and gets to go for a car ride (which she loves) every week or so.  Thanks for all of your information!  

Answer
Well, it's not looking good for getting her bred. It's my experience that if you have a female like this, you're better off just to spay her to avoid any potential problems with the uterus, such as pyometra which is very common in dogs who have silent heat cycles or who are very irregular.

Good luck.