I'm 20 years old and I'm using a cup for the first time. My vagina is really tight (even though I've had sex before) and I usually have dryness problems. I tried the cup because pads irritate my skin. At first, I had issues folding the cup and introducing it, but then I got better at it and the fist day was amazing (also I had to cut the stem almost completely). The second day, after the second change of the day, my vagina started to hurt, it was a little swollen, so I couldn't put it in, and had to wait about an hour before trying again. The third day, after I removed it at night, my vagina hurt a lot, so I decided not to put it in and put a pad. I have a very light flow, and change it about every 10 hours. I'm worried, and don't know if it's because I'm not accustomed to it. I boiled my cup before the first day and clean it with just water, also I don't use soap or anything like that
PD: After the third day, I had the sensation that my blood had a different smell, but I can't really tell if it's a bad one.