Hi there ~ Congratulations on becoming pregnant ! Pregnancy also comes with a list of things that you should expect as you go through it. Initially you might feel like you have all those symptoms you just described like pressure in the pelvis and frequent urination, however spotting blood is not common. I recommend that you consult a gynecologist to have things cleared out. I would not stress about it until there is a verdict from the gynecologist. I hope this helps. Take care and have a lovely day !