At this time, I believe that the first thing that most people think of is to drink more hot water, but this answer will really be rejected. If you catch a cold and have a good relationship with your girlfriend/boyfriend and relatives, don't say anything at this time, just buy medicine or take it to the hospital. If the relationship is average, say to buy some medicine to eat, or let her go to the hospital to have a look, then rest more and pay more attention in the future!