Here are our three beta hcg levels. Who wants to guess? Twins or singleton? We have our first ultrasound on the 13th and we'll be six weeks exactly then.

15dpo (29lmp) - 370
18dpo (32lmp) - 1210
20dpo (34lmp) - 2835

Link to a chart if you wanted: http://www.stuff4multiples.com/Twin-Pregnancy-HCG-Levels_b_129.html