I didn't finish this one. And not for the reason that you might think: "ew, menstruation!" While I can't say I particularly cherished the body horror here, it was at least an original idea, and I was willing to give it a try.
But the first ten minutes of the story were both unrealistic and with an unbelievably annoying protagonist:
1. She's been losing liters of blood a day for 3 weeks, and hasn't gone to the ER? Even if she's used to having a heavy flow she should've been concerned long before this.
2. I don't believe that anybody could lose that amount of blood for that amount of time without feeling any ill effects. Frankly, I find it hard to believe she's still alive. At the very least she would severely dehydrated and anemic. She doesn't mention any symptoms of either. Perhaps she's been guzzling water and eating lots of red meat to counteract this, but if she had been, it should've been mentioned.
3. Yes, the gynecologist was incompetent, and yes he was creepy, but her biggest problem with him in the first scene seemed to be that he was a man. Now, I can understand why a woman would want a female gynecologist, it makes perfect sense. But why would you schedule an appointment with a male gyno and then complain about his maleness? If she didn't want to go to a male doctor, she should've found a female doctor instead.
4. Besides #3, when he mentioned iron pills she got unbelievably whiny. "I have to take another pill, how much is that going to cost me?" She is losing liters of blood every day, OF COURSE she needs iron! That's not the doctor's fault, that's just a medical fact that would be obvious to most people--if you're losing large amounts of iron, you need to ingest large amounts of iron.