Lengthen Luteal Phase

I stopped birth control in early February. Since last cycle I have tracked my ovulation and cycles with OPKs and bbt. I realized my luteal phase was a short 10 days with spotting since 8DPO. So 3 full days of spotting before my normal flow kicks in. My cycles are regular 28-30 days.

Anybody had something similar? Were you able to conceive with a luteal phase like this? Or did you use something to “fix it”?

I have booked an appointment with my OBGYN (who specializes in fertility) to look into this.