Sick Toddler!

This afternoon my almost 2 year old daughter ate some food I think may have been spoiled.. I didn't even realise it could have been until after she ate it and now I feel really bad.. Well this evening she puked up a lot on the carpet when I was trying to get her to bed. I cleaned her up and gave her a glass of water, laid her down for bed, and she woke up like 30 minutes later and puked up the water. This kid pretty much never pukes so this is weird... It's also possible she caught a bug that my friend's kids had a week back too.. She had a play date with them yesterday. She has no other symptoms besides puking twice in the last 2 hours. I was wondering if any of you mommas know of anything I can give her to help soothe her stomach if she continues to feel sick. This is my first time ever dealing with this and would love some advice! Thank you!