Paranoid out of my mind

So I'm not sure why but recently (past week or 2) I've been really paranoid for what seems like no reason at all. My boyfriend leaves for work (4:45am) before I do (5:30am) and he always texts me when he gets to work he was running late 1 day probably by like 5 minutes and I was panicking that maybe something had happened to him, fighting the urge to call him the whole way to work until he texted me. I take the dog for a walk at night (which I've done everyday for 2 years around 7:30pm without problems) and I'm speed walking to the point that she doesn't get to stop and do her thing and just goes potty in the house. I live in a good neighborhood, well lit, low crime, people are friendly, but I wake up some mornings and wonder if my car is still going to be in the driveway (which I also never worried about before). I'm not sure what's changed but I feel like I'm freaking out all the time unless I've got myself locked into my house.