Hello, please help!

I have really short cycles of 26 days, and have been TTC for 9 months now, I miscarried 2 months ago at 7 weeks. I have started tracking my ovulation again this month after giving myself a break last month and I’ve come to realise I’m ovulating on day 6/7 which is my last day of my period. I tested on the 6th which was was CD6 and it was a raging positive but I was still bleeding slightly. We did baby dance just to not miss the window, but I can’t do that every month! Has anyone experienced this and have any advice? I’ve tested today and it’s pretty much a non-existent line!