Hello Ladies!

I have a question, I have been trying to conceive for a while now, I had a miscarriage in October of 2020 and I was 16 weeks pregnant. I have been trying on and off since the beginning of this year 2022 and it has not happened. But what I do notice the cycles I do try my period always ends up being late and I don’t end of pregnant, the last time I tried was in July 2022 and I didn’t get my period until August 29 2022. So then I took a break and I tried in October of 2022 and now my period is late again and I have taken a pregnancy test and it’s negative. This seems to happen every cycle that I try to get pregnant. Has anyone else experienced or do you know why? I been to the doctor because it’s been a concern for me. They just alway send me out saying everything is fine. I never had irregular periods until now.