I feel overwhelmed...

I am 28 weeks pregnant with my first baby. I am 21 and this was not planned at all. I just recently accepted that fact I was pregnant. I have had the worst pregnancy so far. 20+ times a day I am vomiting and this has been since before I took a test back in April! I’ve tried all different medicines and tried everything. I’ve just accepted the fact this sucks. At 26 weeks I was admitted to the hospital with severe contractions every 2 minutes. I was monitored and they decided baby was healthy and it was Braxton-Hicks. Well I woke up today feeling so overwhelmed that I’m not ready. My boyfriend has never been around a baby. I have a college degree in early childhood and I’ve been around babies my whole life. But I’m terrified he isn’t ready and isn’t taking any steps to get ready. I feel behind in having stuff for the baby. Should I have things for her already? What should I be getting accomplished from now until birth??? Someone help this first time momma out...I’m stressed!