Okay, so my baby has been crying/fussing for 12 hours straight, today, with a few breaks when she fell asleep exhausted.

In short, she was a bit grumpy and had a moderate temperature (37) last night. We gave her some Calpol (infant paracetamol medicine) and put her to bed. She woke at 3am SCREAMING and screamed for an hour. Then she fell asleep until almost 7am. The rest of the day, she has been whining, whimpering, crying......

She hasn't really eaten much today because every time I put the bottle into her mouth she goes postal. It's as if she might be teething, as if her gums hurt (she does have a lot of drool) - but her gums are not red and I can't see any white lumps. She did freak out when I popped my finger in there, though....

..... however, her food refusal could also be caused by a tummy ache, right? Maybe she has a tummy ache? But she hasn't had any sickness or diarrhea.

She doesn't have any cold/flu symptoms, either. Despite how little she has eaten, she has had plenty of wet nappies. She only usually poops every other day so it is not unusual that she hasn't pooped today.

When do I need to worry? When do I need to take her to the doctor? Her temperature is only a little over normal right now (but she is whining).

What could it be? Does it sound like teething??

She is three months old.