Question about late AF and X-ray

Hi,

I’m currently a week late and have no PMS symptoms. I always crave chocolate for a few days before AF and I have PMDD (pre menstrual dysphoric disorder) so I get super depressed and suicidal even for up to 7-10 days before AF arrives. So far, I’ve been the happiest I’ve been in months and for a lot longer than I’m used to. I don’t crave chocolate at all. I also have a lot of CM.

I took a couple HPTs (last one was Thursday night) and all were BFN and got one blood test on Tuesday which was also negative. I’m not usually late but I can’t say I’m 100% regular either.

I have to get a spinal tap under X-ray on Tuesday. They won’t do it if I’m pregnant (since they’ll be Xray-ing my pelvic area (super lower back)). As far as I know I am not pregnant. I’m just late for no reason. What should I do? I plan to test today and maybe call my GYN tomorrow to see what she says. I just don’t want to harm my baby if there is one there.

Thanks.