Feeling really sad

I hate that I feel this way because I'm one of those women who wanted this so bad. But I swear I'm so sick I ate 3 times yesterday and I vomited all 3 times. I woke up this morning and immediately started vomiting and there wasn't even anything on my stomach. I'm starting to feel so depressed I just want to cry because I don't know what else to do I'm starting to feel like if I don't stop vomiting so much the baby is going to starve and I'm going to miscarry. I've tried everything I swear I have and nothing has worked for me. I'm sorry I know I asked for this but no one told me it would be this bad. I don't mind a little morning sickness but the vomiting has become out of control. Even my fiancé is starting to get worried ( this is our first baby) at first he would say it's me eating the wrong things but now he sees that im trying everything. Thanks for letting me be a cry baby ladies.