over thinking everything!

is it just me, or is anyone else over thinking every little ache, pain, cramp? i really go to the bathroom and hold my breath every time afraid to see blood. i currentoy have a 2 year old and think every time she climbs on my lap and hits my belly, she hurt the baby! how do i ease this anxiety? not sure i can handle that constant thinking for the next 8 weeks! we just found out saturday we are hopefully expecting our rainbow baby! we lost oyr 2nd baby April 20th. can someone please give me a glimmer of hope to ease my mind?!