I'm not sure whats going on?

[swjet]

On a Thursday I was with a lady doing things, I was using protection, the next day on a Friday I felt a bit dizzy, by Saturday I was having gas reflux symptoms like nausea, fatigue and body pain, and change of stool going to the toilet in the morning  my stool is semi hard after 15 minutes I have to go again and my stool is soft or runny , by Monday I was feeling a bit worst and dehydrated  so I went to the doctor she took a blood and stool sample and put me on drip for 2hrs, my stool sample was normal but my blood had abit of high level of bacteria the doctor told me mybe it's something I ate, doctor diagnosed me with gastritis, after a week I went to a doctor closer to my house they took a blood sample my blood came back positive with H Pylori, I'm now waiting to go for a Endoscopy and Colonscopy to see what's going on inside. Now I having further pain on my lower back and back of my neck and ribs also I have a white tongue with spots on the back and side of my tongue, I've lost about 8kg in about 3weeks, should I be worried for STD?