I would say you're probably ovulating. Ovulation can create bloating, cramps, backache, and slimy, egg yoke like discharge. Completely normal. And above the pubic hair is above your uterus/ovaries, unless you're pregnant and showing, which you obviously aren't because you're not sexually active. I'd say that if you're constipated, that hardness above your pubic hair is more than likely stool moving through your intestines. Or it could just be your muscles. By the way - ovulation can occur anytime you're off your period (It can even occur on your period!), not the exact "14 days blah blah blah".
I'm a doula - sort of like a midwife, but not. If you have any questions, feel free to PM me!
...this too shall pass! Give it a few days. You may feel the effects from ovulation for up to a week.