R2 P2 Day 24

Yesterday I thought I did well. I went for a walk in the morning. For lunch I had fish and tomatoes with an apple. Half of the apple I cooked with stevia and cinnamon. For dinner I had beef and spinach soup. I made a lot of broth for some reason. Later that night I did day one of couch to 5k with my friend. It wasn't as fast as I would normally have liked but she just had a baby not too long ago so I wasn't going to push it. I came home and had a really nasty half of a grapefruit. I peeled it and I must have eaten too much of the pith because it left this metallic, nasty taste in my mouth that I just couldn't get rid of. I tried drinking water but it made the water taste gross. I tried eating a couple blackberries and then a couple raspberries but to no avail. I finally took a couple pinches of some cheddar I had just finely shred earlier in the day. I sucked on those. Whatever happened yesterday sucked royally because I weight in at +1.5 lbs. It really sucks! I am tempted to give up. I had a three pound loss yesterday and then I gain back half of it today trying to stay on plan? I didn't even let myself cheat! All I can think of is that it must have been what happened with the grapefruit. I just have ten more days that I have to hold on. I have only lost the weight back from last round. I haven't even lost anything else! ARGH!