Stomach Ulcer

I have noticed blood in my stool for the past two days. This has never happened to me before so I am quite freaked out. I've been doing investigation online and I think that I can attribute my symptoms to a stomach ulcer.

The research I've found says that NSAID's can lead to ulcers. I used to take a lot of Imitrex and I still take Amitriptyline every night. I think that both of those medications are NSAID's (right?)

I am just wondering how urgent treatment of this is? I have a very hectic life and don't think I have anytime to go to the doctor this week (needless to stay stress is a likely factor for this ulcer).

Any advice or knowledge you have would be helpful...I am a little scared. Thanks