Since January or so, everything about 5:2 seemed harder, and no matter how hard I tried, I actually ended up ganing weight. I also took myself in cheating on fasting days, for example by exceeding my kcal on fast days, and eating 700 kcal instead of 500...
In February I took pregnancy test, and found that I was 6 weeks pregnant... So of course no 5:2 since then.
Now I am 27 weeks pregnant, expecting in October, and my weight is the same as before I started with 5:2 (which I was on for about 1.5 years). So just imagine what my weight would be if I hadn't started with 5:2!!! I still have to expect to gain some more weight, but at least the starting point wasn't too bad
So I cannot do 5:2 now, but I am actually missing it, and plan to start again once I am done with breast feeding
I also have a girl at work, who's been doing 5:2 for 1.5 years now, and she's delighted as well. She's not overweight, but this helps her to control her weight. Before 5:2 she was actually starving herself to maintain the weight. Now she is delighted that after being for holiday for 2 weeks now, eating ice cream and pizza everyday etc. she can still come home and have a tool to continue her weight control without panicking about the weight gain. And it works.
So I think that for me 5:2 is a life style, and I will continue with it when I can. It is important though, eating proper food on the fasting days when you can - spending your kcal wisely.
When you sit there, eating a nice 300 kcal salad, it is easier to think that the sacrifice is not that bad