I agree 100% with Final 3 Greens.
This is perfectly normal. In fact the situation you were put in sounds pretty scary to me....just done first solo, out on your own for the first time, Tower tells you to do something completely different to what you've done so far. Most people would be nervous...though many wouldn't admit it!
Most of us have experienced being near the airfield, but not being able to see it...it's suddenly gone, someone seems to have moved it!!! This can especially happen if you've had to orbit, which can be quite disorientating in the beginning. If you can, try and reorientate yourself by looking at the compass, working out where you should be with respect to the runway, then looking for familiar ground features. If that doesn't work, as Final 3 Greens says, ask the Tower for help. Don't worry, you won't be the first to do that, far from it.
If it makes you feel any better, here are a few of my...er....non-conventional radio calls - all quite recently, when I'd been flying for several years.....
In the middle of Paris, approaching the Arc de Triomphe...
Errrr....Molyneux, I'm really sorry, but I'm not where I just told you I was. In fact....I have no idea at all where I am. (They gave me a squawk and directed me to Paris Heliport)
Going into Kemble, or thinking I was....
Kemble Information, sorry, but we're not downwind for your runway after all. I think we're at a different airfield. We'll call you when we've sorted it out.
In France, having asked several times for instructions to be repeated...
La Baule, we can't understand what you want us to do. Would it be alright if we.... [we suggested a type of approach and landing that seemed sensible, and they agreed to it].
These were not emergencies; just the normal things that sometimes happen to normal people. I'm not suggesting that you copy that type of radio usage, just hopefully convincing you that being lost and admitting it is not a hanging offence!