2 months of testing 2 times a day for ovulation

Traci

I have been testing back to back for 2 months and I've never got a positive or anything close I use easy at home and I don't have any medical conditions like pcos or anything like that I have 2 kids I'm trying for #3. I don't have any insurance so I can't go to the doctor does anyone know of anything that might help or has anyone gone through this? Also I've only been using opks 2 months. Should I try a different brand ? Please and thank you!