7 and a half weeks pregnant

So I'm already seven and a half weeks pregnant. What can i say, this pregnancy is totally different from my first one. For one thing, i feel tired and sleepy a lot, but that's not something to complain about :) The worst thing is that i feel nauseated ALL day long (plus nights). With Noah i have never had any symptoms and i thought it will be the same the second time around. Boy i was wrong. Every pregnancy is indeed different (I heard this before but I was certain that I will be just ok). Anyways, i guess i should be happy that i haven't been throwing up all day long like some do. So far i haven't but i feel like i am always on a verge of throwing up. I went to my GY doctor this week (everything seems to be fine with the baby, saw baby's heartbeat :) and she gave me a prescription for Zofran (8mg). She acted like it was no big deal to take it, but it scares me out! I don't know what to do. I am soo tired of feeling like ick and not getting anything done, yet I am scared to death to take something that may be unhealthy for my baby. Anyways, i think i should just trust my OB and go with whatever she says it's ok (after all she is a smart lady and wouldn't give me sth that's potentially harmful. Anyways, i had taken Zofran couple times already and felt better. However, i decided to take it only if i really feel bad, not on daily basis. On a different note, I have never been so hungry in my entire life as i am now with this pregnancy. I eat constantly and can't help but crave unusual for me things like french fries or fish burgers from McDonald's (i never eat this crap). I also love Mexican food and anything that's unhealthy...Go figure :)
Here are some pictures of Noah eating pasta (I craved pasta a lot during the first weeks of my pregnancy and therefore i fixed it almost every day) Lucky that Noah seems to like it :)