I have been having spotting and cramps since about 4w and now 5w2d. When I had some clots on the TP I called the advice nurse who told me to go to the ER. ER doc said the only thing they could do is run betas so at 4w6d mine was 1600 and then 49ish hours later at 5w1d they were 2500. Should I be concerned they didn’t actually double? I used a calculator online and it said the doubling rate is 76 hours. A couple of beta charts said that over 1200 or 1600 the doubling rate slows to 72-96 hours but the calculator also said I had a slower than normal rise (confusing!). And also in beta base the average doubling time for my levels is 42 hours so it’s not looking promising. I’m doing them again tomorrow at 5w3d. No ultrasound yet and my first appt isn’t until 4/23.