Is this just bad teething or do i need to get him to the doctor?

[Knakard]

Ds has been teething really badly for the last few day and has had all associated syptoms runny poo and sore bum, off food etc. Hes also got a bit of a cold

For the last few days hes also been quite lathargic. Last night and today he was sick a few times after having milk.

He also had a high temp last night, 39.5ish which came down quite quickly after a dose of calpol and doesnt seem to have gone back up today.

I didnt think teething was suppose to cause a temp?

Between time he is faily cheerful, a bit clingy but willing to interact and play.

Should i get him over to the docs?

I would just for peace of mind if nothing else.

cant get an app till tomorrow, ds has just woke from his nap with really sticky eyes, like they get when theyre tiny.

I this a symptom of anything else?