UCAS track is down at the moment because (i think, may be wrong) the Scottish highers are coming in, then it will be open for the unis to alter statuses again, but if you are waiting on exam results and you have a conditional firm offer, they will not update until exam results day. If you are that concerned, you can contact the university, they should be used to people worrying... try not to - I know it's hard - but if you met all the criteria it will eventually say it.
( been through uni once before, about to do a second degree, so it's my second 'waiting for UCAS')