Are these pregnancy symptoms

So I posted recently about throwing up stomach bile one morning (few days after period) and being confused because I just had a super weird period. Not I'm constipated and been having dull cramps in my lower abdomen to my lower back. AF comes June 13. Today was the last day of my ovulation window. I've heard of ppl having periods during pregnancy or at least one in the beginning. I'm just really confused on y I'm feeling like this I also have been super tired like sleeping non stop these past 3 days. And burping a lot. Stomach is also making rumbling sounds idk if that means anything lol maybe I'm symptom watching 🙄