Any help would be appreciated

I'm trying for my rainbow baby I mc last month and started my first cycle exactly 28 days after mc started im now on cycle day 12 iv been using opks I'm worried they aynt getting any nearer iv also been temping wich has been very steady untill today it took a dip from 36.03 to 36.00 does temp dip before ovulation ?

This my opk from today first morning pee

Them ones are all past days opks

This my chart