I've been on here 23 days straight three quarters have been well regimented but..

If you're doing more exercise this time, your muscles will be retaining water to repair. This can make it look like you're not losing weight, especially if you weigh weekly. It's only been 3 weeks, you may just need to wait longer.

Also it's worth asking, do you weigh everything you eat? Do you eat back your exercise calories? Can you open your diary?

You said you only loss when you were doing less exercise -- are you eating back your exercise calories? Some people find that when they're eating back estimated exercise calories, they end up eating at about maintenance. This happened to me when I got to my current weight; eating back my exercise calories brought me really close to maintenance, and then my occasional overages (50 calories here, 150 calories there) were eating up the rest of my much-lessened deficit.

Other people can come in with more specific advice that'll need more information (current/goal weight, height, calorie goals, do you weigh your food, etc) but that's what sticks out to me. I'm sorry you're having a hard time with it. It's hard to stick out when you're feeling frustrated.

Definitely start weighing your food if you can. It also looks like you've had a lot of restaurant days - it can be easy to wipe out your deficit if you're regularly eating over (especially if you're possibly eating over even when you are trying to count). Restaurant food also tends to be high in salt, which will make you retain more water, which will cause less weight loss (but not less FAT loss, the extra weight will be water weight).

Tighten up your logging, and stick at it.

I would second weighing your food -- I've owned this particular scale for two years now, and it really changed how I consume food -- it helped me really understand portions, and when I do have to estimate (e.g. when I'm at a restaurant, at friend's for food, or happen to have forgotten to bring it with me to my boyfriend's) I can do it better because I'm used to what the portions look like. I also just really like it -- a friend of mine (@diannethegeek) likens it to feeling like a mad scientist, and that's totally accurate.

Restaurant days can be tricky, but if you're eating at chains, you should be able to find entries in the database -- and in some cases, even confirm those with websites. Even best-guess estimating when you're at a local place is better than nothing at all, in my opinion. (I love eating out, and learning to cut back and cook more at home was a challenge. I like to cook, but I also like pizza, lol.)

In the long run, you have to find a system that works for you. This is what's worked for me, but that's totally anecdotal. Best of luck with however you tackle it!