Short Luteal Phase- please help :(

Please help me with some advice. I have a literal phase every month of 7-9 days, which obviously isn’t long enough for an egg to implant easily.

I have been ttc for 8 months and had 2 chemical pregnancies so far- that I know about. I am feeding my 20 month old and had periods for 8 months now.

Just rang my doctor and she said she has never heard of taking progesterone for lengthening luteal phase and to just carry on as I am- and wait for a 3rd chemical pregnancy so I can be referred. Seriously seriously annoying.

Not sure on my next steps?!?! I feel like I can prevent myself miscarrying and it’s such a shame to go threw it again just to be referred when that’s the reason I’m losing them!!

Advice on my next steps please!!!! I’m in the UK FYI.