Period? Brown Spotting Neg HPT? Not ovulating? Help! Please

So just turned 45, all tests normal in range fsh, estradiol etc.....I do have a low egg reserve tho, from the AMH test.

I completely missed my period in May, first time that has ever happened since I was 11! 

June, scanty brown for 4 days, obviously not preggo.

July, normal period

August , started Friday brown again very scant and light, a few times I wiped ( mote like sticking tissue paper up inside) was mixed with what looked like fresh blood, but just a tiny bit and a little stretchy mucus.

My cycle is 25 days every month, even with this brown stuff, it came on cd 25

Took 4 hpt neg

I could have sworn I ovulated, ewcm, positive lh opk on July 16.17,18 (darkest).

Hubby and I bd'd every other day.

So did I technically miss 3 periods? May nothing, June and Aug, brown both for 4 days.

And if they aren't my period why would I still get it on cd 25 every time.

Boobs killed me 2 weeks before AF was due, then week of pain was much less. Boobs usually hurt week of normally.

Am I too stressed from ttc that I'm not ovulating? Is it a weak ovulation? 

I have anxiety/panic disorder, had for 25 years and have had much more stress than this and never missed.

Mother, grandmother and Aunt started early 50's, I just turned 45 in May .

Or.......am I starting peri menopause or going into menopause?

WTF? <<< sorry???just heartbroken and confused.

Doc chalks it up to stress, but that regular MD.

Going to gyno next week. Had hsg 2 years ago, slightly tilted cervix, found 4 healthy follicles at time.

Unexplained infertility is what he said. No reason why I shouldn't be able to get pregnant....

Should I just give up my dream?