Need advice

So it’s been two week since I last had intercourse. I’m on the nexplanon implant, my boyfriend always wears a condom and pulls out before finishing with the condom on. I usually don’t ever worry but last week my nipples got super sore and I started freaking out. I haven’t had a period in over a month, but my periods have been super irregular since getting on the implant. Anyways, since it’s been two weeks, I took a test and it was negative. Is that test correct and I can stop worrying now?