So sick of feeling anxious & worried

I kinda just need to vent. I’ll be 37 weeks tomorrow and I’ve honestly loved being pregnant, but it’s brought about a lot of anxiety and fears since day one. I’ve always been in really good health, but at 13 weeks I had an emergency appendectomy, got Covid at 28 weeks, and since then have had a few other issues pop up, and now struggling with right lower leg pain that has me freaking out. I’m trying not to get too worked up because I know stress isn’t good for the baby, but it’s really hard. My husband thinks I’m crazy and I know he’s just trying to calm me down but I’m terrified of having a DVT. I’ve talked to my doctor about this and she has checked my legs and says they look fine, but it’s been bothering me today more than it has in the past. I have no redness, swelling, or heat — just aching in the outside of my lower leg (below my actual calf muscle). Today my foot turned bluish & my toes have been really cold on that side, and I’ll occasionally get the feeling of pins and needles. I’m wearing compression socks, but I don’t know if they’re necessarily doing anything. I have a doctor’s appointment tomorrow thankfully, but I’m just so anxious about all of this & don’t know what to do to calm down.