Venting.. spotting! So annoyed .. Anyone else dealing with this?!

I'm 6W 5D pregnant with my rainbow baby after miscarrying in May 2017 .. This pregnancy is so stressful just like my last.. I heard the baby's heartbeat on Thursday the 18th .. I've been so constipated .. every time I have a bowel movement I spot brown or pink from pushing/pressure ... every time I get a vaginal Ultrasound I bleed red and it stops right after.. I learned to today that if I laugh insanely hard ( to the point i cant breathe) I spot brown/pink .. everyday it's a constant worry that something is going to happen and I miscarry.. any little wet I feel, I freak.. I'm constantly wiping/checking .. I'm going out of my mind.. I'm so frustrated and on edge about it all. I couldn't be more excited about being pregnant but all this worrying has taken my happiness away .. I guess I'm so worried/stressed that I'm going to lose the baby .. I just want answers .. what the hell is going on.. am I going to miscarry or what is this.. no pressure an be applied or I spot pink/brown .. 😫😣😞😒 I've just had it and no one gives me answers