NEVER USE A HOT MATCH TO REMOVE A TICK. Sorry I had to yell it.
I KNOW you thought it was the right way, I used to think that, too. It makes the tick regurgitate back into the host ... so it's a sure way to get any infections it's carrying.
You really need to talk to an LLMD (Lyme specialist). Your son has had one month to let possible Lyme establish in his system. He might actually even need LONGER than three months. I have had Lyme for 35 years and have been on antibiotics, and much more than just one, for four months ... I'm probably looking at several years of intensive treatment, then a lifetime of maintenance. Hopefully, I can just use supplements to support my immune system for the maintenance, but some people have to stay on antibiotics their whole life with chronic Lyme, so don't be worried about three months.
I HOPE he didn't get it! But it's better safe than sorry.
As far as the blood test, they are not accurate. The lab that has the best accuracy and that is used by the LLMD's is IGeneX (
www.igenex.com). If his test comes out positive, consider it positive. If it comes out negative, I'd have him retested through IGeneX. But I'd REALLY talk to an LLMD as it might be better to get him on meds now.
Plus, be sure you get a copy of his test results and either post them here or Lymenet (or show them to an LLMD) as MOST doctors don't know how to read them. My doctor told me I was negative and I was very clearly positive ... of course, I'm seeing an LLMD now!
I'd post on Lymenet's seeking doctors section and find a doctor near you. Don't be surprised though if it requires travel. I go to NY from Ohio to see mine. Please take this seriously (I know you are) ... especially since he has swollen lymph nodes.