ever since I stopped BC

Ever since I didn't get my last shot and me and SO decided to start TTC in September my periods have been erratic. They come when they please. Got my first cycle 28 days after I missed my shot then got it 30 days after that then two 21 day cycles then a 45 day cycle the a 41 now my last two cycles have been 35 and 34 day cycles so now I'm at CD 29 and I've been bloated and have heartburn my CM is kinda cloudy? And watery. I don't know I guess I'm just venting. So tired of seeing BFN that I don't even want to test. Usually by now I'm PMS but not right now which I'm hoping is a good sign. Me and SO just want a baby so bad OBGYN says everything is good and everything is good with SO just waiting for our turn but then there's so many girls who get pregnant on accident and here I am crying every time I get AF