Ovulation issues after MC?

Hi ladies. It has been 8 months since my MC but the last two months I have not been able to detect an LH surge. I have been using Clearblue Easy Read every morning and then using generic test strips around 12pm and 6pm every day as well. I am starting to get concerned. Has this happened to anyone else? I think I will call my doctor once AF arrives this month. My cycle length has been getting shorter and shorter each month as well which is why I have been testing every day to try and make sense of it all. 😔