Has she lost interest, or am I being paranoid?

So I have been dating this girl for the past two months. We mostly only hangout on weekends as we live 45 minutes apart, but when we do hangout things are always great and we have a great time together. We text all the time and Ive met her friends and she has met mine and we have slept together 5 out of the 7 weeks that we have been seeing eachother. This past weekend, we went out together Friday night and had an amazing time, slept together and parted ways Saturday morning because we both had diff plans with diff friends for that day (this is normal for us). The next day on Sunday, I texted her like I always do and she took forever to respond and was not being as talkative as usual and sending short responses and I had a feeling something was up. I happen to know for a fact that she didn’t sleep with someone that night as she slept at her friends house, but im not ruling out that she may have met someone. Feeling insecure about it on Sunday, I attempted to make plans with her for Tuesday, but she said she was busy which is understandable. On Monday, I couldn’t stop thinking about her and invited her to come to a nba game with me this Friday, which she accepted. As of now I think we are still going. I should have just stopped talking to her there and waited until Friday but on then on Wednesday, she posted a snapchat of herself looking amazing and I couldn’t help myself and dm’d her saying she looked great and that I wanted to see her that night. She said she couldn’t hang because she had a big test to study for (this is believable too, but in the past she has always been available to hangout so twice in one week seemed odd). I told her no worries which she didn’t respond to and haven’t spoken to her since (this was yesterday). Tonight, I have to send a follow up text to remind her about the basketball game tomorrow, and I have a feeling she is going to bail. I could just be acting completely insecure about it and nothing is up at all, but if she is to bail on the Friday game then I think it is safe to assume that she has lost interest and maybe met someone else? If she does, should I completely cut off communication and stop trying? Really like this girl and until Sunday all signs pointed that she really liked me to. Any advice would be appreciated!