why do you have to be so difficult sometimes?

I will give you one example, today in class we were using the word for something that you must do, but you don’t want to do, we were using the word in sentences about our life, about previous jobs we have had, about how students feel, etc… well instead I said the word for “passing gas” (yup thats right the word: fart) instead! I didn’t do this only once, but maybe 3 times! And the best part was we had one of the male teachers for class! Oh good times… mind you, the words are very similar, 2 letters are just switched around… but obviously the meanings are oh so different! There are many words like this in Arabic. Oh how I love being a language student sometimes!… especially when preggo, seems my brain gets even more mixed up!! I have been told my many friends who have gone before me in this whole pregnant thing, by my doctor & read it books that your memory and brain isn’t quite as sharp when you are expecting. I am discovering more and more that this is true! Somedays in class I feel like I can’t even speak Arabic anymore or remember anything!! (granted this happens when you aren’t pregnant as well…so maybe I just now get an excuse for it!)… anyone else out there ever learned a language or studied anything while preggo? Any advice?