Have pimples/red dots all over my face. help!?

Ok so im 21...almost never got pimples in my hole life, i just looked at myself in the mirror and realised my face has heaps of really small pimples or red dots all over my face. Ive had chicken pox and pretty sure ive had a measels shot. Theyre not itchy at all but theres lots of them, they werent there this morning. Anyone know what it may be? Happu to show pictures to anyone that provides contact details. Am really worried