Today i put my trousers on for work and i can't do them up

These are brand new trousers. I bought them before i found out i was pregnant and even then i had to get a bigger size than normal. These are size 10 trousers! What the hell?! It's not as if i've been over eating. I've not really found much food i'd like to endulge in because most foods make me want to throw up. I've never felt like this before. I just feel fat and frumpy. I can't have got my pregnant belly yet, i'm only 6 weeks (nearly 7)!
On another note, i've got to ring up for my first doctors appointment tomorrow because i refuse to have anyone but my general doctor and she isn't in until tomorrow.
My mums back from holiday today so i've got to get off my back side and finish getting ready (well find some other trousers) and wake william up! i just want to lay in bed all day, i feel awful
Also, my friend who miscarried last month found out she's pregnant again. Personally i think it's too soon but if she can handle it, then good luck to her.