Colds and stomach upsets

DD has caught her first cold, and with it seems to have an upset stomach.

She's always been quite a prolific pooer but it's slowed down to one or two a day since she's started ingesting solids. Yesterday she did 5 that were quite watery and today she's done 4 so far, all green and watery. I'm sure she's not taking in as much food while she's ill (we do BLS so not as easy to measure) so I'm expecting them to be looser, but not like this.

She also had her jabs last Friday which caused a high fever (saw the dr on Sat who said she had fever from jabs and other symptoms from virus) and I think I felt a tooth this morning too, but she goes ab dab each time I try to check.

So all in all she's got a good few things going on that could be at least partially to blame.

My question is, do you know how long I should let it carry on like this before taking her back to the dr? I don't want to be an over paronoid first time parent, but equally don't want her to suffer unduly.