I can't see the first one, but can definately see the second one

I couldn't handle waiting, so I would go and see my dr in the morning and ask for a referral for a BT. That way you can also find out the hCG (ask for a 'beta hCG' or 'quantitative hCG') and you will be able to watch at what level it is increasing. Twins will increase the hCG quicker than one bubba.