..I Have Been Feeling Really Off For Over A Year

..I have been feeling really off for over a year now. It comes and gose but has been getting progressively worse over time. My symptoms are
-Extreme fatigue
-unexpected inflammation (entire body)
-breathing issues (shortness of breath)
- swollen lymph nodes
-joint pain and swelling
-join stiffness
- foggyness
- hard time focusing
-not feeling like myself
- sporadic periods that last for months at a time some times.

I have been very active my whole life and have always been extremely healthy. My life style hadn’t changed when this all started occurring.

I did get an iud 2 years ago which worked very well for about a year. Never got my period than about a year ago I started getting my period and it never really stopped... I have to take birth control pill on top of the iud to prevent it from starting.