Advice

Really needing some advice. I’m 16 weeks pregnant with my second and for two days I was really sick throwing up with diarrhea. Well yesterday I felt like I had to poop all day but didn’t really have to. Felt super constipated. I had a lot of pressure in my pelvic area and back. Like super uncomfortable. It kinda worries me for some reason. I don’t remember feeling like this with my daughter at all.