10 day luteal phase

Does anyone else have a shorter lp and had luck getting pregnant and staying pregnant? While TTC my daughter I had a textbook cycle, 28 days 5 day period ovulated on CD 14. This time around I’m still nursing so my cycle is 26 days and last month I ovulated on CD 17. I think this month it was CD 16 but I’m just worried that I will get pregnant and then have a chemical because of no time to implant. I know I’m worrying prematurely but I just wanted some reassurance.