Pregnant - paniced and scared - (long) please help.?

i am completely stressed out and making myself sick. i am 4.5 months pregnant with my first child wih my boyfriend of one year. we moved in together 6 months ago. we are both in our mid-late 20's. this pregnancy was unplanned and a first for the both of us. we found out a little over 2 months ago. there is a lot to do in preperation foir this baby. a nursery needs to be built as we currently live in a one bedroom in the basement of his grandma's old house... his sister's family live upstairs. we don't yet have anything for the baby and not much money. a few hours before i found out i was pregnant he quit his job. he has since got s crumby job with his brother in law making min wage at mostly part time hours. we wanted to elope before the baby comes but he says he can't afford a ring. this part is my biggest stress. i don't know why b/c i know he loves me and isn't going anywhere. i just feel like i want the commitment and union of marriage before the baby is born. i have been nagging at him alot lately about getting things done - getting married - looking for a better job - building the room - getting things for the baby - etc. the more i talk about it and nag him the less he seems to respond and get thimgs done. i lost my pregnant mind on him yesterday b/c he played computer/x-box all day instead of looking for a job or other things that need to be done. i have even threatened to leave for a while and go stay with my friend b/c the stress isn't good for the baby. he feels like i'm bringing the stress upon myself? am i? i've had anxiety/panic attacks throughout my teens and 20's and seemed to have gotten it under control but now i am scared to death about having a baby and being a mother that i'm dealing with a lot of anxiety/panic. when i try to leave things alone and give him room to breath or time i just feel this panic like something needs to be done NOW! i don't want to ruin my relationship but also don't want to feel this panic. i have been home sick from work yesterday and today b/c i have a fever and sick stomach i'm sure due to this stress. my work knows i'm pregnant and hopefully understamds - that's just another worry on my plate being home today. please help - i feel lost.