Hi Candy, Im sorry for your losses.
Personally I'd highly recommend the clearblue fertility monitor to help you conceive. It is so accurate in pinpointing ovulation and has worked for me every time Ive used it.
Then theres the issue of whats causing your miscarriages. In my case its my blood clotting too much. I luckily got referred for tests after my 2 miscarriages (normally they make you wait until you've had 3). Tests revelealed that I have elevated anticardiolipin antibodies which cause blood clotting. Im now on a low dose aspirin a day along with clexane injections daily.
Fo a lot of people a low dose aspirin is enough to thin the blood and Id recommend that you try that. Unfortunately for me I was taking a low dose aspirin for my second pregnancy which allowed me to get to 9 weeks with a heartbeat which eventually stopped. So the aspirin was working to an extent and as I say a lot of people have success with that alone.
Also I found that using agnus castus tablets really boosts ovulation. I bought them from Healthspan direct.
Im now the furthest Ive ever been in pregnancy, its so nerve racking always expecting something to go wrong. But so far so good, fingers crossed tightly.
Best of luck to you x