I'm not feeling very well, stomach wise, and this is what is worrying me...?

Yesterday I baked a cake and admittedly, it didn't look too good, but stupidly I still ate it. About 4 hours later I felt verrrrryyy ill, like I was going to be sick and I just had to lie down. Today I feel a bit better but still not 100% great. Earlier on (sorry if this next bit is unpleasant) I felt like I really needed a number two, so I went and it looked kinda...greenish? :/ (again, I agoligise). I took a gaviscon and my belly has settled a little bit now but still feels a little icky. Tomorrow night, I am spending the evening over someone else's house and spending the entire night there. The last thing I want is to get the sh*ts there or remain feeling ill enough for the urge to go for a number two is overwhelming :/

Do you think if I was gonna get the sh*ts or anything like it I'd have already got it by now? It may not even be from the cake I ate, it could just be a coincidence that I felt ill not long afterwards...I don't know. Your opinions/answers will be much appreciated.

Thanks in advance