Don't worry, that is perfectly normal.
That happened becuase you made your two tamagotchis connect using "version one" or "others".
If you connect your tamas using them, then your tamas can play games agaianst each other and give presents. Your tamas will either give each other a flower, a heart, some ice-cream, a piece of cake/tart, a snake or some poop. Sometimes your tamagotchis can also give each other free items that appear from no-where which are darts, cape, wings, ball, bow, skateboard, cap, bow tie, maracas and a few more. Different tamagotchi characters can recieve different items.
I hope that I helped and feel free to PM me at any time if you need anymore tamagotchi help.
-sk8er girl-