What Causes Recurring Enlargement Of The Inguinal Lymph Nodes?

Hi ive had recurring swollen lymph nodes in my groin for about 4 years now, i saw a dr about it the 3 years ago and they said dont worry about it. Now it worries me because i got strep twice in a month and my lymph node in my neck is still swollen months after that. I have other weird symptoms too like when i drink any kind of aocohol i can feel a burning on the sides of my neck from my ear down. Its not heartburn but a different burn. I also had my gallbladder out 5 years ago. I also after the strep have heart palpitations. Please help!