Period freak out

I've hardly ever been late on my period and it's summer so me and my boyfriend are getting a lot more alone time.! So we've been having sex a lot more, we do use condoms but I'm 4 days late on my period  I have been working out a lot more and eating smaller portions. I feel like I've been getting cramps but then they go away and I'm fine. I know it's too early to take a test I'm just stressing a little too much ?! Someone help .! I need support