kukesi
Please don't cry! 
How long have you been low carbing? There will be weeks when things appear not to be changing - but you haven't seen a four week stall, as you had one week where you put weight back on, and another where you lost that weight - so really, your weight hasn't changed over the last two weeks.
Try and focus on the advantages that you're already experiencing - I have PCOS and my skin is so much better which is great, I do also have slightly more energy. I was also convinced prior to low carbing I had some sort of food intolerance, and since I have not had cramps, so that's great too
Weight loss isn't linear, and there are always going to be times when our progress is slower than we wish. But you didn't put weight on all in one go, so you're not going to lose it all in go either 
I know it must be extra frustrating when you're wanting to try fertility treatment, but if you're enjoying the food, don't feel deprived and are seeing other benefits, then surely it's worth sticking to it? I don't know how much you're expecting to lose each week, but I wonder if your expectations are realistic? On average you should be aiming to lose 1-2lbs per week, for sustainable, long-term weight loss. Sometimes you might lose more and sometimes you might lose a little bit less - but it averages out in the end. Step back and have a look at your progress since you started - do you plot your weight loss on a chart at all? This can be a really good way to see that the trend is downwards. As someone on the last Bootcamp (or possibly the one before that) said - the trend is your friend 
To take your post in detail with my two pennies' worth:
My food last few days is below, other meals I have eaten over last week or so (don't remember days), B- yoghurt (lidl or total ff), eggs all ways sometimes with bacon/sausage/mushrooms, leftovers from the night before, quite often on work days nothing, but did not think this was so terrible as doing this WOE a while?
That's fine, just be aware that the reason for rule no 1 of Bootcamp being 'eat three meals a day' is to ensure that your blood sugar levels are stable. If you're sure that not eating breakfast is working for you, then fair enough - but I'd still counsel you to try and eat something (doesn't have to be a lot)
L and D- leftovers, salads with tuna/egg mayo, beef stroganoff with cauli rice, HM ham, egg and celeriac chips, HM burgers (on bed of salad) with cheese, HM fish pie, HM moussaka, pork belly and roasted veg.
Sounds perfect!
Drinks- Water (sparkling and still), I try and drink around 3 litres, in the last week x 2 days prob only got around one as out of the office all day- so I know there is some improvement there, in the interest of being completely honest x 2 cans of 7up free/zero over the week and maybe 3 coffees made with double cream.
You should be aiming to drink around 5 litres of water per day - and you shouldn't be drinking the 7up! It may have zero calories, but it's sweetened with artificial sweeteners, and we're trying to avoid those. Here's the table showing how much water you should be drinking:
The more weight you have to lose, the more water you should drink. This is from www.low-carbdiet.co.uk/. Water is essential to weight loss for those who eat low-carb. The minimum consumed in a day should be:
Your Weight----Litres
140lbs-----2.5
160lbs-----3.0
180lbs-----3.0
200lbs-----3.5
220lbs-----3.5
240lbs-----4.0
260lbs-----4.5
280lbs-----4.5
300lbs-----5.0
320lbs-----5.5
340lbs-----5.5
360lbs-----6.0
380lbs-----6.5
400lbs-----6.5
And this is the reason why:
High levels of ketones in the blood stream can lead to a reduction in ketone production, therefore being well hydrated could aid in keeping the levels low and ketone production ongoing. Consuming enough water can have many other positive side effects: aids your kidneys with the processing of protein, reduces the retention of water, helps with preventing constipation, and reduces the levels of ketones released by your breath, which in-turn will reduce breath odour.
Saturday
B- 1/2 pk awfully posh pork scratchings (woke late and lazy to cook)
L Other 1/2 pk of scratchings and HM tzatziki
S- pepperami (eating D late this day)
D- Salon cooked in butter with garlic and herbs, and roasted veg (courgette and aubergine)
A lot of processed food going on here - and not much fat or veg at all. You need to be eating more veg/salad, both with fat (cooked with butter/butter added/oily dressing added/mayo added, etc)
Sunday
B- scrambled egg made with butter salt and pepper with smoked salmon
L- salad (leaves, mushrooms, cucumber with olive oil dressing) and garlic mushrooms
D- steak, cauli cheese (made with cream and cheese), asparagus
This sounds like a much better day
Are you taking any kind of medication at all? Beware that this can also impact on your weight loss.
But I'd focus on going back to basics with Bootcamp and make sure that you really are following the rules. Especially plenty of water, fat and carbs from veg/salad.
Hopefully things will start moving for you soon!