9w 3d freaking out help please

Ariana • I'm 20 and we're currently pregnant with baby number one. EDD October 28 2015. 😊👶✨👶🎃
So I was excited to hit 9 weeks but it's been a nightmare I vomit all day unless I take medicine and I've had pink ting dischage twice I've also realized the cramping has come back stronger like it was at the beginning. I'm freaking out because I don't see my doctor till Thursday and I'm starting to believe something is wrong. I want to convince myself that this all is just due to the baby getting bigger but I'm not so sure that's true. Has anyone else expeirence this?