Also I have really bad allergies and I feel flu like a lot of the time from them. My throat will get sore a lot from nasal drainage and my lymph nodes get tender fairly often. I also have a stiff neck and painful shoulders. Exercise really helps and I use Zyrtec for the allergies. Doesen't make the symptoms totally go away but really helps more than the others. If you have a lot of drainage you could also take Zyrtec-D which has a decongestant. The allergies also make me feel tired a lot especially hard to get out of bed in the morning. Once again excercise helps with this. Massage therapy can help also with the stiff neck.
Good luck