are these indicators of any disease like stomach ulcers, herpes, hiv, and spine problems?

I have been working for the past one year and it requires me to sot all day , however in the long run started feeling back pain which i was told was fatigue.

i too have ulcers but have never gone for a lab test i just based on the theory part ie the symptoms and concluded that i have them, however nowadays i feel nausea , sharp pains in the stomach and whenever am in my periods some months the blood comes in a solid form as if its a tiny piece of meat and i keep on wondering why?

last year i consulted a certain doctor who told me that i had pid which was treated please help am confused.

today i was reading on the internet that some of the early symptoms of herpes and hiv are fatigue , nausea but am very much sure that i do not have these two because i last tested for hiv in july last year , so what can i do and what could be the problem,

i need you to help me with a solution because am a young lady of 23 years of age and i still have a great future a head of me . thankyou