Doctor on Monday

I went off birth control in June. My cycles have been really long and irregular. My first cycle was 54 days long, then 53, then 33. I'm now on day 44 and still haven't had my period even after horrible back cramps all day Monday which isn't normal for me. My doctor scheduled me to come in on Monday, and I'm thankful he is going to see me, and was able to get me in. I'm kinda worried I'm not ovulating. What questions should I ask, tests should I ask for, and should I ask for any medication? I'm 29 and TTC baby #1 so I feel that I don't have a lot of time to waste. Any advice would be really appreciated and baby dust to all!!!