Still all BFN

Had my iud removed May 17th, did not have my period the entire time I had the iud in. Started a “regular” period May 20th and now I’m technically late but also don’t really know how long my cycle is. I’ve tested way to many times and all negative. I’m confused because this could mean so many different things. Do I have a longer cycle? Did I ovulate later and still have a chance? Am I just needing time to regulate after having the iud so long? I hate the unknown!

Has anyone else went through this? Any advice or similar experiences?