Too early to be concerned?

[Simbathecat]

I've been lurking for a wee while and just joined today so forgive me as I don't have all the acronyms etc down to a T!

I've been off my pill since getting married in October and period been arriving like clockwork which I'm taking as positive having been on the pill for 15yrs+

My cycle is 26 days so understand I should ovulate at around day 12-14. However my query is that I am getting positive result from ovulation test on day 16 and 17 which means the luteal phase has only been 8 days this month and 9 last month.

Should I be concerned?

If it helps my luteal phase is about 8 days and I did still get pregnant after 6 months trying. I took B vits to try and lengthen it and got it up to 9-10 using those but actually wasn't on them when I fell pregnant.