Pregnant with baby number 2

So I just found out Thrusday that I am pregnant with my second child! I am not really sure how far along I am, according to the clear blue digital it says 1-2 weeks and the other clear blue digital says 2-3! My question is.....I have been having some mild cramping in my lower abdomen, I have already went to the ER and the doctor told me I was pregnant and that my hormone level was at 466, so even if they tried to do an ultrasound we wouldn't be able to see the baby because your hormone level needs to be at least 1200! I am worried that something may be wrong, however he told me it was probably just the implementation of the baby and that's what's causing the cramps! I go see my OBGYN on April 17th! Any advice or suggestions would be awesome!