Vitamin C and other problems

I think I'm sick again... This is very annoying because I should be in perfect conditions for my test on monday but no... So I decided to increase my vitamin C diet by drinking hot water with lemon and I bought extra strong meds. 

I went to the pharmacy and ask for a specific type which has caffeine because those meds make my sleepy. I grabbed one brand knowing it had caffeine but I asked anyway in order to be sure. The lady answered it didn't have caffeine when I was reading in the components it did have... So she got upset and started making comments, I guess in order to make me feel bad for checking her answer.

I wasn't trying to make her feel bad, I wanted to make sure the pills wouldn't make me fall sleep during the day. It wasn't personal; I was not questioning how professional she is... I honestly don't really care; all I want is this cold out of my body. I only felt bad for a couple of minutes. If she decides to get upset it's her problem, not mine. 

Sometimes people have the power of making us feel guilty, or bad, and even make us responsible for their problems or mistakes just because we were around. Avoid taking in that feeling, it's not your problem to deal with. I'm sure you have plenty of stuff to worry and deal with. Focus on your own problems first, deal and solve those. It is a type of "selfishness", but the good kind.