Pretty much no hope anymore

Sorry to get blue but just need to vent.

Didn’t try but didn’t prevent for 2 years. Now TTC for a year and still nothing. I’m doing everything right, but nothing ever happens. I’d felt good about this months and thought I’d felt some symptoms yesterday, so today I tested and it was a stark negative. It’s only 8dpo but my period is due in 3 days - I’m convinced that my luteal phase is just too short to ever conceive, but when I visited a fertility specialist she told me it wasn’t too short and that my issue is that I need lose weight. So I lost weight and as I thought still nothing, because the truth is I was still perfectly healthy before: stellar blood pressure, no thyroid issues, ovulating every cycle, and just in case I use OTC progesterone creams every cycle. Still nothing.

I have no hope left, I feel worthless and foolish for letting myself build all my visions and plans for the future around something that is unattainable.