Anxiety and pregnancy

So I need some advice and I need to let this out ... so I think I might be pregnant cause me and my SO haven't been being carful lately .. but I'm okaii with that because I want to have a baby and we are supposed to start trying for a baby in the summer anyway ... so yesterday I tool a test to see if I was and I read the test wrong and I thought it said positive ... when I seen that I started having a bad panic attack and idk why !!! .... I really want to have a baby with him but for some reason the thought of being pregnant freaked me out .. idk what to do :(