I am 222 pounds/F, Should I wait to start strength training!?

I started lifting heavy weights at about 250 pounds (I am now just around 209), and I wish I had started earlier! And yes, my weight loss stalled for five full weeks after I started lifting, then at the end of that time, virtually overnight, I dropped 12 pounds. It was really difficult to keep motivated in the setting of stalled changes on the scale, but having read about other people's experiences I knew that if I was keeping within my calorie budget the weight loss would return full force eventually. I will say that I did not start lifting until I was two months into my weight loss (I started at 280 pounds) and I had firmly established my new eating style, logging my intake, and getting enough aerobic activity.

The weight loss stall many folks experience is due to increased glycogen and water storage (a 1:4 ratio, so it is mostly water, but it must be there with the glycogen) in muscles (a good thing, as muscles can only use local glycogen) and water uptake by damaged/remodeling/growing muscle tissue. I suggest you roll with it, because it will only benefit you in the long run. People who lift during weight loss end up really happy that they did not wait until they got to their goal weight to start lifting.

Start strength training/weight training now. I wish I would have worked to at least maintain my muscle the first time I went through a large weight loss. I ended up thin, but still flabby and kinda gross looking naked.

You will look better and be smaller at a higher weight if you maintain more of your lean muscle. Which also means you will be able to eat more food when you get to maintenance. Both are awesome reasons to push your muscles.

If you are afraid of getting discouraged when the scale doesn't move quickly, buy a tape measure! If you are not worried about that....buy a tape measure! Seriously, I love mine and use it along with my scale to measure my success. It helps me see when I have made improvements to my body even when the scale doesn't show a darn thing. It also lets me have hard evidence when I lose inches in my problem areas which keeps me going.

If you need more inspiration, start looking at the pictures on MFP of women who lift, OMG they are amazing! If you look you will often see them weighing more in their after pic and yet looking much smaller than their before.

So, to bring a very long winded answer to a close....yes, start lifting now!

I agree- start now if you want to lift! you will retain some water and your muscles will store glycogen, but that's a good thing and not at all stopping you from also losing fat which is the ultimate goal.
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edit- hrm does not accurately track weight lifting calories. if you have something like a body media or another full day type tracker it should be good.