I am a 38-year-old woman and had my first unprotected sex last month. My last period day was four days before sex. My menstrual cycle is about 19 to 21 days. I had my next period 18 days after sex lasted for four days. The period was normal, but very little slow flow. After the day of intercourse, I had a yellow sticky discharge with a bad smell, and about three days before my period, I had spotting. Also, on the last day of my period, I now have a very watery, sometimes clear, or light yellow discharge with a bad smell. Some itchiness and stinging feeling were also present before and especially after my period (with the water discharges). As of today, it has been 26 days exactly since I had sex, and I have been tested for pregnancy at home many times, and it was negative. I do not have pregnancy symptoms. Kindly help.