Pregnancy scare and now afraid to be sexually active

Hi glow peeps!
I got off BC and didn't have a period for 4 months; at this point I had protected sex with a condom. The next day I get a text from the guy saying it "maybe broke" and he was super freaked out. Unknown to me, the reason I wasn't getting my period was because I was off BC and my body wasn't used to having periods on its own.
I took multiple pregnancy tests and was really scared. I then went to the gyno had a full blood test and check and it was all
Negative. 
I'm now back on birth control and still terrified.
Did anyone else have this experience??