I caught two of my eastern garters making some serpent-love yesterday.

If it was successful (which I'm not sure about), will the babies be born this fall or in the spring?

Pregnancy lasts about 100 days, right? How much can this time vary?

Is there any special care I should give her? Are there any vitamin powders or something I should put in her food? Does she need a warmer temperature?

This is my first time breeding, and I'm sooo excited. When and how will I be able to tell for sure that she is pregnant? Should I weigh her every week to see if her weight increases? How long until I will be able to notice change?

All tips and advice are welcome.