Maybe?

Me and my partner are stressing out, I’m on birth control and have been since November, but it’s not strong enough for me according to my doctor so in a few months we planned on getting nexplanon and seeing how that works. I’ve been cramping really bad for around two weeks now and getting nauseous. My normal cramps would last only about an hour so this is definitely something new. I’m getting a test soon but until then any advice?