Not sure what’s wrong with me....

Rebecca • Married and TTC #1 since sept. 2016

So let me start out by saying I’m sorry that this is kinda long. I was on birth control from my freshman year in high school (so around age 13/14) until I was 23 and married. So in 2016 we decided to start our long journey to TTC. My periods were normal at first but have started to come farther and farther apart. In on cycle day 52 currently, negative test, and still waiting on af to show up so again this cycle I had to start my Provera to start my period. I am over weight, weigh about 230lbs and am 5ft1in tall. I’m not sure why my cycles are starting to get so long. It’s now really hard to know when I’m ovulating even with ovulation tests. I made an appointment with a specialist back before Christmas but my husband now doesn’t want to go bc they wanted him to do a test and he says we can’t afford it now. Any suggestions on natural ways to get my cycles back on track? Any of you ever had this problem? I can’t remember if I had regular cycles before birth control or not.