Nauseous after period ends?

Hey everyone

So I’m on the combined pill and I’m very good about taking it at the same time every day and not missing any pills. I also get a withdrawal bleed every month.

My last period/withdrawal bleed lasted October 7-12 while I was on my placebo week, and then on Tuesday the 13th I woke up very nauseous and threw up. I was also very mildly nauseous on Wednesday and then woke up very nauseous today (Saturday October 18) as well. Sometimes it’s normal for me to wake up nauseous if I’m very hungry but I have also noticed mild cramping and back aches.

I’m not sure if I’m stressing myself out by googling symptoms but I’m very concerned about being pregnant. Is there any way I could have “morning sickness” and other pregnancy related symptoms even though I had my withdrawal bleed a week ago?