Irregular periods after taking birth control pills

I was on birth control for about 6 months and then stopped. I stopped in June and

ever since I have had periods range from 22 days to 50 days!!!! It's been so hard ttc and this cycle about a week ago I was spotting. I hoped it was implantation. And this week I was suppose to get my period if I was on a 28 day cycle but I only bleed once and it was during intercourse. Today, we thought blood would come out when we were done but we checked and he was clean no blood. I don't want to get my hopes up but this cycle is the first one in which I bleed in the middle of it! I hoped it was implantation 😭😭😭 to scared to test!!!!