"In season" questions...

Now that Gabrina has went into heat, I have a few questions. Hopefully you guys can answer them for me since I won't be meeting with my club leader until July!

1. Gabrina has been acting really weird lately. I know that most of this is her hormones, but there is one behavior I'm very concerned about. She has been needing to go potty way more than usual. She will get to the point that she can't make it to the door to go outside and she will have accidents in the house. She is very well potty trained and I know she feels guilty about this happening. Is her need to "go" just because she is in heat, or should I call my leader? Also, what kind of "weird" things did your puppy do when they were in season?
*Edit*
Gabrina has been drinking more water which has lead to more relieving. I need to change my question to...Is drinking more water while in heat normal? And is less bladder control normal?

2. Gabrina is a fairly active dog who doesn't like to be left at home. Now that she is on house arrest she has been so hyper. I can't take her on walks because I have at least two neighbors' that have unneutered dogs that are constantly getting out. And when I let her run in the backyard our neighbor's unneutered dog barks at her the whole time and she just runs over to the fence and sniffs at him. When I try to play tug with her she gets bored and she has never been a fan of hide and seek. Normally she gets her excersise from going on outings and walks. So, when your dog is in heat what do you do to excersise her?

Thanks so much,
Maddie and Gabrina