Kirjava, you most certainly should not be fighting for a bloody CD3 test. GPs know Fuck All about fertility in the vast majority of cases. This is a fact. That is why any doctor worth his salt will hold up his hands when asked for tests by a woman and say, 'yes, of course I will arrange for preliminary tests.' Day 3 tests include TSH (thyroid), FSH (follicle stimulating hormone), estradiol and another hormone, but FSH is a very important signifier of egg health.
A short luteal phase is never great news, despite the odd Bumsnetter having had success with a ten-day LP. I'm not saying it's all doom and gloom, but do your research and get to the GP. Beansprout, where are you up to in terms of ttc months and tests? Here are 
for your crashing AF hormones. Soon they'll be gone, but let's look forwards and make you a small plan. How does that sound?
Sammy, you are so absolutely deffo going to be PUPO. You're so amazing to be hanging on, despite you crying at home and breaking your heart in ways we can not know. It's agony, and you're allowed to be at the fucking end of your tether. Hold on to your fantastic husband - and to us - and distract, distract, distract until there is definitive news
Sammy, I also know for a fact - from many years on the infertility/IVF forums here and on Fertility Friend - that follicles do naturally come and disappear for no good reason. It happens for all women everywhere - it's just that the vast majority of us are blissfully unaware as we never have our follicular phase scanned and monitored as closely as you are having.
Please let go of the bit of irrationality that's saying your lining is inadequate and will never be right. It's out of your hands but you have money and time still on your side. Bless you, I know this all sounds so tediously like yet more platitudes from internet strangers, but the time has come to let go of the anger surrounding the wait and the frustration and the not knowing. It will come together. I promise