Red blood fears

Jen
Sorry for tmi. Woke about midnight to pee have had quite a lot of milky white discharge but tonight I felt quite dry. Inserted a finger to feel cervix but I have long acrylic nails. Caught my cervix ( it's quite low I think) and winced a little. When I pulled out finger it had red blood on tip. Now freaking out as to whether it was there or I caused it by poking things with my nail. I'm 6w6d and had a miscarriage at 5w in 2012. Can't sleep now so worried. This would be me and my so first baby and we are so excited. Any thoughts?