I did an online Tesco shop which was delivered last night.
I had clicked through my coupons and there was one that said "double points, used 0 of 21 times, expiring in 11 days"
So I added it to basket, and I checked my Clubcard this morning and it looks like I've received double points - happy days.
However, it looks like I have 20 more times to use this but it now expires in 9 days 
This is the first I've seen it. I didn't know it was there.
I can't believe how many points I have missed out on 

I use the points to pay for our summer holiday so I'm so annoyed.
Does anybody know about these coupons? How or why I got it and if I'm likely to get one again? I wish they had emailed me or something to tell me about it!