ideas !

Katherine • mama of 2 || 20 years old
I'm about 6-8 weeks pregnant (the number is unsure because my first ultrasound isn't for another two weeks) I'm already growing enough to where my pants are too tight that it makes me very uncomfortable or sick-feeling with the pressure it puts on my stomach. Any ideas for places that sell not too expensive maternity clothes? I also am still in highschool so I'd like nice clothes but I definitely need to save money. 
ALSO my parents aren't on board with me and my boyfriend moving in together but when the baby comes I do not want me and him to be separate! That wouldn't be right. so what are some ideas for turning one room into a nursery as well as a place for two people to sleep.  ( products that would fit nicely, rearrangement ideas, Etc.) 
Thank you :)