I am a 22 year old female. My monthly periods are usually regular but every now and then I'll skip a month or 2. Well my last period was January 18th. I've had spotting 5 times since. Only lasted less than an hour each time. My test are saying negative and I haven't taken one since 2 weeks ago. Could I still possibly be pregnant? The doctors in my town won't do a blood test of the urine test is negative.