Does anyone know what maybe happeing? please help

So confused my last depo was in April. After that I had pretty regular cycles for me between 40-45 days. Had what I think was a chemical pregnancy(BFP few days later numerous BFN and Neg blood test,with very painful AF.) in july my cycles went back to normal fairly quickly. But now I am on cycle day 70! no AF no sign of AF the only thing I have noticed is every once in a while not on a regular basis, I have white discharge that's not accompanied with a smell or itching ect so I don't think it is a yeast infection. I asked my Dr to see me and they told me to take a hpt but all are negative. She says maybe it's just a long cycle but I haven't had a cycle this long. I'm freaking out and my Dr doesn't seem concerned anyone have any advice. Also my lower left side is a little larger than the right. My lower abdomen on each side get a very dull pain. It doesn't really hurt I just don't know how to explain it. I'm pretty sure I'm not pregnant considering I've taken atleast 10 hpt and not even a faint positive on those. I'm starting to get worried does anyone know what maybe happening. I know I should be talking to my Dr about this but she doesn't seem like she's going to be much help,so please don't tell me that. I just was hoping for some kind of advice or maybe someone has had a similar situation I'd really appreciate it. Last AF
Oct 23.