HCG not doubling but rising? 7w5d by lmp?

So Tuesday my HCG was 24,712. I bled bright red 1 time on 1 wipe on Monday which is why they ordered it. All together I've spotted Monday (red), Tuesday (pink/brown), Thursday (pink/brown), and a teeny tiny little bit Saturday (pink/brown). They've all been 1 time that day and only when I wipe. All pink/brown was mixed in with typical discharge too. They called Thursday night saying they did want a second draw after all (originally they just booked me for an u/s this coming week to be on the safe side) but I couldn't get in until Saturday with work. So 4 days later, my levels just came back at 40,532. The nurse who called me initially after the Tuesday draw seemed sort of relaxed about the numbers being so high and she's the one who originally said another draw wasn't necessary. I should be 7w 5d by lmp or 6w 6d going by conception date. Should they have slowed down doubling by now or is this a cause for concern? I read somewhere that 60% rise is still normal and read 30% somewhere else, but I barely went up 30% every 2 days so I'm still worried. I got the results online from my provider's website but she doesn't get into the office until 2 hours from now at least and I'm freaking out and need to be at work before that. This is my first pregnancy so I don't know exactly what's normal and when to worry. Thank you in advance ❤