I brought a couple of childrens fruit snack pots on monday?

i didnt open one till today and it had red gs and water melon in it. it hadnt been opened and it dont go out of date till 28th march. They tasted ok but i worry about things when they havnt been opened yet and ive had them for a few days. they wont upset us will they caused they were still in date and not opened till today. they would of still be fresh wouldnt they. PLEASE HELP