I am 5weeks pregnant with my second baby. We conceived on clomid which slightly raises our chances for multiples. I had put that in the back of my mind but as this pregnancy progresses I can't stop thinking about the possibility of twins because this pregnancy is so much different from my first. At five weeks with my first I didn't even know I was pregnant let alone show. With this one at five weeks, I have obvious baby bloat. My tummy is round.  I vomit violently after eating at least once a day. And I am having odd pains for being only five weeks. Round ligament pain already and intense rib and back pain. I just feel I shouldn't feel like this. Any mommies with multiples or singles have symptoms like this?