Normal spotting?

Hi ladies

I have had 2 normal, healthy pregnancies in 2009 and 2013. I finally became pregnant in March 2020, that sadly ended in a miscarriage May 2020. I just found out August 3rd that I’m pregnant again. Last period was July 7-13. Doctor did an abdominal ultrasound even though I’m only 4-5 weeks and was able to see formation inside of the uterus (which gives me a lot of hope - last baby didn’t develop on time/very slow). This after noon I noticed a bit of spotting. I don’t believe I’m having any sort of pain or cramping - although every little thing is making me paranoid. Is this normal at all? I’ve never had spotting until my last pregnancy, which I ended up miscarrying. I did have a VERY strenuous bowel movement yesterday and had intercourse earlier this morning. It almost feels as though I’m having Braxton Hicks / lots of air in my lower abdomen. No pain though. Thanks ladies... just hoping to calm down.