Did i do the right thing

I just started a new job. im still on orientation. it’s my third week. for two days now, ive been having dangerously low (30-50) blood sugar with no symptoms. I also just started my period today. so I wanna get checked tomorrow so I called out of work.

I always feel extremely guilty calling out so can someone just ease my anxiety and tell me that it’s okay?? I know it may seem stupid but I just need reassurance.