Cycle problems

Ok ladies. So I'm getting worried I may have pcos. I have irregular periods. I'm not overweight or anything but I know weight can have nothing to do with it sometimes. However since my cycles are so irregular I have trouble tracking ovulation. I use internet cheapies for my opks. I've used them for just 2 cycles now. One cycle was 28 days. The second was 52 days! My first cycle I got one positive and that was it. On the second cycle it was like I was receiving a few random positives or "almost" positives. Any advice