Sciatic Nerve Pain?

Ash
Anyone experiencing any sciatic nerve pain this early? I'm 4 weeks today and it started this past Saturday. It's a pain that starts at my left hip and radiates to my knee sometimes to my ankle. I feel like it's so early. Ugh. 
I'm seeing my doctor today not for this but for my spotting that is going on 10 days. I'm nervous. I don't want to suffer another miscarriage. I'm a mess right now. She did say that 30% of pregnancies experience spotting so she said it could be normal for me. I guess we shall see!