Making Pregnancy Harder Than it Needs to Be

So here's a window into my latest neuroses as far as pregnancy is concerned:

I could not sleep last night. And not the normal I can't fall asleep for an hour or two, or I'm up for an hour or two. No, it was like 5 AM and still wide awake. My hip was hurting (old sports injury), which I think was what was keeping me awake, and I knew some Tylenol would help. So I went downstairs and got two capsules, came back upstairs and re-read the print-out from my clinic about what's allowed (Tylenol is on the list)...and then...I just could not take it. And I don't really understand why. 

And Tylenol's not the only thing...I've got this long list of things that I won't do that would make me happy/more comfortable to do, like:

• No sleeping on my stomach (I love sleeping on my stomach), because my clinic said not to during the 2WW and I want to be extra careful even though the 2WW is over
• No tea of any kind, and I love tea in the morning, but I'm scared I'm going to have a reaction or something to something herbal, and even though my clinic says decaf tea is OK I'm scared to have any caffeine in my body (decaf has a small amount)
• No putting my computer on my lap (which is my preferred way of working), just in case it could cause some harm (there are no studies that say that it will, but it still makes me nervous). Instead I'm working in places/positions that aren't as comfortable for me
• No pedicures (and this is a sacrifice)
• Etc.

None of these things have been banned by my clinic/OB, but I guess it's me being nervous about this pregnancy, not wanting to do anything wrong, or more accurately, if I do miscarry, not wanting to have ANYTHING I can look back on and say, "Maybe that one thing caused it." 

I feel like a crazy person...why can I not do things my doctors clearly say are OK? Does anyone else struggle with this?

XO