Second trimester morning/evening sickness?

I'm 11 weeks (almost 12) pregnant, and so I'm pretty much out of the first trimester. During the first trimester, I wasn't sick at all. Now, right after dinner I vomit. I've taken to eating primarily bland foods so it doesn't upset my stomach but that doesn't do much. Also, now all of a sudden I get morning sickness. I tried keeping some oyster crackers beside my bed and eating those before I even get out of bed but those seem to come back up, too. Is this normal to be sick in the 2nd trimester? Also, how should I deal with the sickness?