May, hope you are alright with no pain around the lower tummy. If you don't feel right or very worried, maybe like what kanelmo suggested, go for a check to feel better rather than be worried sick until tomorrow noon.
Devilene, I was shocked to get a borderline blood test result too. But I feel much better after reading online about so many mummies having healthy babies despite poor screening results, so I hope keeping positive (or at least not being pessimistic) will help. Amnio is not a must it really depends on you and hubby, and beside, I guess you still have time to decide? How many weeks are you now?