What Is The Treatment For Fatigue And Weight Loss?

Hello, I am a 24 year old female Mother of 2 toddlers ages 3 and 21 months. I have been suffering from numerous symptoms througout the past year such as; severe night sweats, extreme fatigue, dramatic weight loss with a low of 98 pounds, constant swollen glands, lack of an appeittie, a chronic low grade fever that comes and goes, aching stiff joints, and a newly developed allergic reaction to the sun. and Newly developed pressure in my chest which causes me to become easily winded and feel like I need to cough but often feel like I cant not get enough air to get the cough to come out. I have had numerous visits to my family doctor and some ER visits. My blood has been drawn 5 times since january 2013. Although my WBC is on the low end of normal range My nuetrophils are low and lymphoctes high 4/5 times and in June was told I had mono for the 2nd time in my life the first being in 2008. the result of that EBV test was 3.4. I am growing concerned after looking at my blood results my self and My increasing number of symptoms. My dr seems unconcerned and I am growing tired of feel unwell all the time. should I seek a 2nd opinion or am I being paranoid?