I had a my first pregnancy be a miscarriage mid November, due to an undiagnosed hypothyroid. I was put on synthroid and my TSH levels are now in the upper normal range. I just tested positive for pregnancy again this week. My HCG levels on Tuesday were 237 and on Thursday were 649. I thought the numbers were only suppose to double every 48-72 hours, yet mine almost tripled in 48 hours. My doctor says my resuls are normal, but she wants me to get another HCG blood test on Monday.
Do you know what would cause my HCG levels to almost triple in 48 hours?
