light pink spotting - help!

Claudia • Wife, Mom to baby Roman born 02.18.18💙
Hello everyone,
Tonight I just realized I have light pink spotting. No cramps, or anything.  I am 7 weeks pregnant.  We did have sex 3 hours before and had sex yesturday as well.  Not sure if it caused this? Or if this is normal?  Freaking out a tad here!  Any advice would help.  
Thank