Viral infection. Help to understand.

Hi, During last 4-5 days I am feeling diarhia, dry cough in thorat, loss of appitate, weakness. Then I was tracing my contact 1) Last week one person was standing from me for almost 15 feet distance and then he sneezed but i had face mask 2) On last Thrusday one of my lady collague in office was sneezing heavily on 6 feet distance but later I found her ok and another employees also found ok who were present during that time. 3) while going to office I have to go from heavy trafic but I always use face mask and helmet and no interaction with any one 4) I have only a collague in office on less than 3 feet distance but he is dibetic and do not have any symptoms. In this situation do I have any possibility to have the covid 19 infection. Please help to understand. Regards, Dnyaneshwar