Anxiety ia so bad

Im having crazy anxiety. Like racing heart crying a lot feeling like i miss how things were when i was pregnant. Generally terrified of the future and what it will bring. Ive never been good with change and having a baby is a huge change. I Knew that going in but i never expected to feel so hopelessly overwhelmed with anxiety. I love my son to death and i want whatever is best for him so i dont want to be anxious like this around him but obviously i cant just stop it. Ugh. Idk what to do.