Bleeding and pregnant?

Was late for my period, although very rare spotting. Took a pregnancy test after being 3 days late, was positive. Took a blood test, was equivocal and have to take another on Friday. My hcg levels were at 15 mIU/mL (less than 5 is negative, 25 is confirmed, so I'm in a grey area). I've started bleeding a little heavier today and freaking out to have to wait another 2 days to get a second blood test. Cramping has also gotten a bit worse. I'm one month away from having been trying for one year. Feeling like so close and yet so far. Anyone ever had this issue?