worried...

I had a overwhelming fear today while driving that my tube is blocked, not sure what brought it on or maybe I do, I was at a clients house and saw her newborn baby and they also informed me her sister is pregnant, my heart dropped. Why is it so easy for everyone else be me. I got in my car and all of a sudden, I started to have a sort of panick set in, what if my tube is blocked? Maybe that is why we are not able to have another baby. Since I only have one functioning tube this whole idea just scares the crap out of me, since if it is blocked our only option is IVF. I cried the whole way to get my daughter, when I got there my Mom knew something was wrong, I told her. And she said you got pregnant only 3 years ago, it has to be open. Then why is this happening? My RE appt is not until Aug 21st, that is when he will schedule it, I am not sure I can wait until then. I am already full of anxiety over it. I am not so much worried about the SA but the idea that my tube is blocked sends me into a panick.