Hi hun. It's sounds like you've a lot on your plate (if you excuse the pun lol) at the moment. I was on anti-depressants for about 2 years or so and came off the completely about 2 nearly 3 weeks ago now. I didn't notice a weight gain but then again... i didn't really notice anything. I'm sure you know how that feels, being on your medication.
The great thing is, you've decided to make a difference.
First off, don't bother with Weight watchers or anything like that if you can help it. Yes, they give support and healthy meal ideas etc, but all of that you can from here and a few other sites.
First off, what inspired you to go for the low carb approach? was it suggested by your doc?
I only ask because A LOT of people on here swear by the old fashioned counting cals and a good work out regime. I'm one of those. Only started 3 days ago, and whilst i have obviously lost weight YET, I feel better in myself. More energy, happier in myself and less prone to a low mood (which i was really worried about when i came off the happy pills).
It might be worth talking to your doc and seeing if they can suggest anything else that might help.
In the mean time, if you have any questions, problems or just need a chat we're always here!!!
Keep us posted hun, and good luck.