13m old has VERY runny poo, for last couple of months

[NAR4]

Dr has said it is a bug, but would this really go on for 2 months? Ds started off with a high temperature about 6hrs after immunisations, started coughing a day later and then also vomiting a couple of days after that. He had an upset tummy the whole time. After a wk all was better apart from his upset tummy. Poss tmi but it is literally like coloured water, several times a day. I have 5dc and nobody else has been ill. He has clearly lost weight but my GP doesn't feel he needs to be seen again. I tried keeping him dairy free for the first 6wks but as it didn't make any difference I am now letting him have it again.

Any idea what it could be? Don't think it is teething as no other symptoms and didn't happen before, even when he cut 4 teeth in 1wk.

maybe an allergy

I would've a different gp tho.

He clearly needs some tests to see what this could be

Got a stool sample tested to see if it is food poisoning and its come back negative.

Have Gp appointment again tomorrow to ask for further investigation.

I'm worried it is a reaction to the Hib b/Men c vaccination he had. Want to get it sorted before he has the next lot of jabs, due next WK.

GP surgery have insisted I see same Dr who I have already seen about this. Have been referred to hospital pead. and told to cut out all dairy in ds diet.

Other than constant diarohea ds doesn't seem I'll.