i could really use a cycle buddy! currently CD 4!

hey guys. I'm currently on CD 4. My cycles have been somewhat irregular since getting off the pill in July! my last cycle was 39 days and to be honest I'm not even sure I'm ovulating. my bbt is all over the place and I didn't get any positive opk last cycle (but I only tested once a day from CD 12 to CD 22 so I may have ovulated after that). my husband and I have been TTC since October but nothing yet. I have been taking prenatal vitamins since August and I used preseed for the first time last cycle. I know it can take a year even for the healthiest people to become pregnant but I have always had this irrational fear that I can't have kids. I'm worried that it hasn't happened for me yet. I'm sure it doesn't help that I'm a little over weight. I have been trying to lose weight but it's very difficult for me. im 25 and i'm 5 ft 7in and I'm about 190 lbs. my BMI is 29.

if anyone else is going through something similar or is on a similar cycle, or if anyone just has some advice I could really use some support right now! even good vibes and prayers are appreciated!