TTC for 2 months with a 25 day cycle....

Monika🎀
My husband and I have been ttc for 2 months now and I'm afraid that there is something wrong or we aren't doing something right. I have multiple sclerosis and I am taking medicine for it. The meds I am on are the lowest birth defect rate and it is okay if I get pregnant while taking it. I am super nervous that we aren't getting pregnant because of my medication. I also have a 25 day cycle and I have 2 tracking apps that all say the same day for ovulation but I get a BFN and my period... I just don't know what more I can do to help my situation out.... Any advice?