Omg! @Heyside im so sorry to read back of your journey recently. I haven't had a chance with a 4 week old and 2 step kids but I have been thinking of you often.
I really hope it isn't ectopic. My levels with mine started at 190 and then also didn't double. They kinda just increased slowly then even decreased. I bled heavily, thought I'd passed everything and then after a week started bleeding again and my levels started jumping massively. I never had the classic signs as in one sided pain til quite late. I just had bad aching. By the time they got to it I had been internally bleeding for days.
So keep an eye out for non classical symptoms also, I was far too blase about it all.
Once again I hope you don't have to have the lap etc done and I'm sending massive hugs xx