I don't want to pick up my clothes from her apartment.........?

i'm flying to my parents for 3 weeks and things have been rocky and we just got out of fight just a couple days ago and i feel like she won't be there when i come back because she can unattach herself and me easier. when i was hugging her goodbye on our last date before i leave i said i'll see you when i get back and she didn't say anything..and then i said i'll pick up the top i left at her apt when i come back. i was holding on to that top as a safety thing that i could at least go pick it up after i come back and she found the top and told me i can come pick it up wed, she prob thinks i want to wear it on my trip because i was so curious about it but now that i won't have any clothes left in her apartment i don't have any guarantees. things are so shaky right now and i think being gone for 3 weeks she'll try to think things over and get unattached and think it's easier for me but it's not. she told me a month ago she's thinking about breaking up with me when we got in a bad fight i'm worried. i don't want to pick up my top should i not pick it up?