first I would get a pregnancy test. That's the most common "change" that occurs in a female body, that can cause this.
Secondly, I would give her $150. This is about what a checkup costs without insurance. A woman's basic check-up. They do a pap smear and check for STDs. If she truly can't afford to pay this, surely you could give her some cash if you're worried about her.
But all-in-all, she is your ex, and unless this is a pregnancy or STD, I wouldn't stress over her health problems too much. Not much you can do.
Stumbled into Primal due to food allergies, and subsequent elimination of non-primal foods.
Start Gluten-Free/Soy-Free: December 2012; start weight 158lbs, Ladies size 6
Start Primal: March 2013, start weight 150lbs, Ladies size 6
Current: 132lbs, Ladies size 2
26lbs lost since cutting the crap.