You did the right thing... having your child evaluated will not hurt anything. If she needs services, you will have them at no cost to you in your home. If she doesn't, then you'll have an answer! At her age, she should be putting words together into 2 word utterances and be replacing gestures with consistent words. Speech therapy at a young age is very powerful and you will see your daughter develop her language skills and you will also likely see a decrease in her frustration when she is able to communicate!
The only thing I will say is that you really should have told her father ahead of time. If you are co-parenting and intending on raising her together then you need to include him when making these important decisions.