Nexplanon

I’ve been on Nexplanon for about a year and half now and it’s pretty useful. Lately ive been extremely scared because I recently got COVID and I started getting really bad stomach pains. There’s a lot of bubbles as well and discomfort . It’s been a month since having COVID and I still have stomach pain/bubbles. I also look very bloated and I usually don’t get bloated on Nexplanon. Is it possible I’m pregnant? I got my period last month and I’m still waiting on my period this month so I’m waiting to see if I’ll get it. If not I will take a test. But I have been thinking about it everyday and very paranoid . I assume it can be stress belly because I’ve been anxious and stressed for a month already. Someone please help me! I will include a photo as well as to what my belly looks like . I’m 16 btw!