two nights ago a girl with mono was at my friends house, i don't think she had a fever or anything like that it may have been the latter stages of the sickness. The host gave her a designated cup to drink out of. Last night i went to this friends house again and was drinking out of a beer can which was my own, my idiot friend started pouring the dregs of all the beer cans into her designated cup which still had some beer left over from the night before, then she poured most of the beer from that cup into my can and i drank it. Is it highly likely that i contract mono in this way? Is there a chance that i will not get it?