Should we be testing

[worriedatthemoment]

Ds 16 had covid about 2 months ago picked up on lft , all he developed really was slight cold , sore throat nit asymptomatic when picked up
He now has felt a little nauseous and had a slight sore throat for couple days just informed me
Not one of the testing symptoms granted, but when he had before he never had those
Also advised not to test for 90 days unless develop symptoms as sometimes i think can show as positive
Is it possible to get twice in such a short time ? He feels well now the nauseous passed in a day , throat is worse in mornings when he wakes up and although still there does feel better as day goes on
So is he likely to have covid again or just normal winter bug

To add its not sore enough to need painkillers or anything like that as he only just mentioned it

If you are concerned get him a PCR test, I doubt the original infection would still show up as positive after 2 months.

Don't qualify for pcr as none of 3 main symptoms and not close contact that we are awAre
I do have LFT at home though i guess i could get him to fo them over next couple days