Still trying to get pregnant!

Ok so me and my husband of almost 4 years have been trying for #1 for 3 years. I have had 2 miscarriages and it's been a lil over a year since the last one.

I have made changes like drinking water through out the day when I used to hardly drink any, I hardly ever drink soda if I do I never drink the whole thing and I rarely drink alcohol and I also eat alot less junk food. I workout on a regular, I take prenatal vitamins and have been tracking my cycle for 2 out of the 3 years we been trying with apps like this one.

Any advise would be greatly appreciated :)