Will love always feel unsafe?

So I have been in a relationship for 4 months and been managing it well I think. After every date or after a long without a reply I expect her to leave me. She has anxiety too. Last time she spent 3 days without texting me. And recently a day the first time I kept calm, but the second time I crashed out. Turns out she was just studying for an exam. And seeing microexpressions that tells me she doesnt car as much. Should I trust those feelings? How to tell the difference between my attachement style and actual partner who doesn't care for your needs?