Should I not follow up after a job application?

I m an 18 (soon to be 19) year old college student living in Philadelphia PA and I only have a little bit of work experience. I landed a work study job at the Free Library of Philadelphia and I worked there for about 4 months mostly working in their afterschool program and computer assistance during the semesters. Now that they re over, I m out of a job. I ve applied to about 7 or 8 retail places in about a week (I didn t apply to any fast food places because it would be easier to transition my skills and experience to retail and customer service). I just tried following up with one of them (The Target I applied to) and she said that if I was qualified, I d be contacted but she spoke in a rude manner. I felt like I annoyed her by asking. I ve only been contacted for one interview for tomorrow but that s it. Should I just wait to be contacted or should I follow up?