That is not HIV related. Its been to long. Talk to your Dr. about your symptoms. Sounds like you have a infection. ( Thats not HIV) Get tested just to be sure. For peace of mind. And from now on always use condoms.
Forget about those symptoms. Get tested since you haven't been after unprotected sex.
I will go ahead and answer your questions.
1.)They do not sound HIV related.
2.)They can be bigger then grape size, sometimes the size of golfballs etc.
3.)No they are not painful.
4.)No. Symptoms of ARS including swollen lymph nodes will come about 2-4 weeks after infection and will last about 1-2 weeks. All symptoms will come at once, not just swollen nodes.