4w6d today, bleeding help?

Ali
The past Wednesday I started bleeding a little, more than just spotting and it was bright red with one little clump, and stopped a couple hours later. This coincided with mild crying, but nothing bad. I called my dr when it started and they had me come in and take my HCG levels that day and then came back today to get the levels taken again. Wednesday's levels were at 496 and I won't find out today's levels until Monday, I'm so nervous about a miscarriage, I've never been pregnant and we have been trying for a year and a half with PCOS playing against us. What do you guys think? Am I overreacting?