ovulating or gravid

[guidofatherof5]

Welcome to the forum. You're keeping Garter snakes since you were a kid is the same for a lot of us. They have a power over us.
Where your females with males? If so did you see copulation? Keeping weekly weights on them may show increases due to egg developement. A fairly steady weight my indicate eggs only.
I had some female drop jellies and I didn't even know they were carrying them. Gestation can be up to 120 days. I've never had any go past 100 days and average 90 days. All my experience is with T.radix. I hope some of this helps.

[Didymus20X6]

You're keeping Garter snakes since you were a kid is the same for a lot of us. They have a power over us.