Go for it

But with in your means.
Even pregnant and on a budget you can still have a lot of fun. After all, why not Live a little, live on fire? Even on a budget there are tons of ways to do so.
Go out for a bicycle ride. Have a saucy dinner at a nice restaurant. Go to a free concert. Go swimming! Depending on your location of course depends on exactly how much fun you can have. How much fun you can have also depends on exactly what you enjoy doing.

Personally I love simple things!