46 days & negative..?

Amanda
We decided I'd go to my OBGYN to start clomid and I have to go on days 1-3 of my cycle. I'm irregular but since getting off birth control my cycles have been no more than 39 days. First cycle after getting off the birth was 41. I've had to cancel two appointments because my AF hasn't arrived. I've taken pink strip tests I bought on amazon and they are all negative. I went to the dr on April 18 and they did an ultrasound. I hadn't ovulated then which would have been day 26, so I probably wasn't going to. I've had weird cramps that feel more like burning or warm sensations than normal cramps. And oddly large amounts of cm for right before AF, but I'm negative on pregnancy tests. I just want to start clomid. What in the world is going on??