Late period

Olivia • Sat, Jan 22

I’m ttc. My period is over a week late I’m on cycle day 39. Still no period, did a preg test couple days ago, test was negative. Has this ever happened to anyone ??? And any advice on what to do?

Also had 2x misscariages my last being 4 months ago and my previous period the previous month was a 35 day cycle