onaka itai

I went to bed at 6 in the evening and got up at 7:30 this morning. I had breakfast and lunch properly, so my body should be fine except for my stomach. It refuses to work for me and does not digest in a right way. I feel worse than ever.
I thought the medicine was too strong for me so asked the two girls to read the instruction for me. Though it was in Romanian, one of them could read. (they were from Swtizerland)
I stopped taking those medicine. Will i be able to bring my back-pack to the airport tomorrow morning?