What’s going on? 😩

I haven’t had my period for 4 months, and every test I’m doing is negative, I have strong pregnancy symptoms and there’s no other reason to why my period has stopped. We are trying for a baby and I feel like this has just messed us up completely because we were so dead set that I would’ve been pregnant because AF hasn’t said hello ☹️ any opinions on what could be happening? ☹️