constipation 💩💩😭

Brianna
Ladies!! 😥 
I'm having a serious issue. I've been feeling great and skinny and now I'm feeling huge, bloated , like I gained 10lbs and I cant poop at all! I haven't pooped in like 4  days (No it's not cause of my period)  every time I eat even if it's a little cup of yogurt I feel like I ate a whole cow.  I constantly feel full.. help plz