I'm a new member of GDF and a relatively new dog owner. I'm still learning a lot of things. I grew up with dogs and livestock a big part of my life, but hadn't had my own dog until December 2020. The adoption of my first puppy, Rainey, was not a planned adoption... It was a head-over-heels thing and I couldn't pass her up.

I'm in a quandry of sorts. Rainey is now nearly ten months old, probably around 25 lbs or so(?) and is in her first heat cycle. I decided against spaying her. I noticed her early on in her cycle before my family's male dog even seemed interested in her, so I started keeping her in her kennel and away from him. Then I'd switch the dogs, ie., put him in and let her out, because I only have one kennel. About 5-6 days after I started noticing that she was going into heat (it was probably a day or so-ish after she started flagging) I went to the kennel and found Rainey in there with the male. I have no clue if they mated or not. Immediately, I got him out. After further investigation, I found out my little sister accidentally let him in. I was not intending for it to happen this way. I could just let it go, but the big problem is that this male dog is her sire. He's around 50 lbs, but overweight. I could wait and see what happens, but if she whelped wouldn't I just have to do away with the puppies anyway? Do any of you have advice for me? I'm not at all interested in giving a mismate shot. Wouldn't care to kill her just to get rid of potential unwanted puppies. Any experience with Ivomec, flax, or anything else, or do you guys think I should just wait it out and deal with the puppies if they come?
I would really appreciate any advice y'all can give me. I'm young and inexperienced and don't exactly have much good advice coming from elsewhere, besides what I can find searching the internet. Thank you.
