Alrighty just let me know. Am I crazy?

I always have anxiety that I am pregnant. OK OK OK let me phrase this by saying I have polycystic ovarian syndrome, so my periods are always off. Ever since I started having sex I would always take pregnancy test at least every two or three months. My brain knows it’s polycystic ovarian, and that I can’t have regular periods. But my anxiety tells me something completely different. I just wanna know if I’m the only one out there that is like this or are there other people that go through this exact same anxiety

Please don’t get me wrong! If it happens, it happens. It just sucks knowing if I’m wasting my money even taking these tests. Husband and I have been unprotected for six months and nothing has happened yet. I am just starting to doubt that anything will happen and I feel like if it would’ve happened it would’ve happened by now being 25?