I had a biopsy done after 2 miscarriages at 17 and 18 weeks. told i have bacilli +, could this the main cause as i want to try again. i need answer s?

No: You really need a full workup , usually by a fertility specialist, for recurrent miscarriage. This evaluates physical, hormonal and genetic causes. The most likely reason is that you formed genetically abnormal pregnancies, that is the cause 70% of the time. And time may be very important here. So i would recommend an evaluation sooner rather than later.