Advice needed

Currently 22 days late with my cycle being on day 54. I took a pregnancy test on day one and six of being late, both negative. I haven’t taken one sense then, I just don’t feel like I could be pregnant, mostly because of the two I took back in January. on average my cycles are 50 to 60 ish days long and I don’t understand why at all. when I do have a period now it’s extremely painful to the point I have to stop anything I’m doing and lay down. It’s almost like unbearable pain, It was never like that before. but before this they were very regular. I’m not under a lot of stress or anything that I can see to cause them to start being irregular. We’re trying for a baby and I havent used any opks we are just kinda swinging it right now so I have no idea to when I’m ovulating because my periods are so off. I have an appointment with my gyno the 10th hopefully I’ll have some answers but do you ladies have any idea what this could be or advice for me?