Hi there, I honestly wudnt worry, I was bleeding from about a week after conception until about week 10, and im 17 weeks now. I even had black clots, and so was very worried but I went in for 2 emergency scans and everything was fine so that put my mind at ease. I would wear a light sanitary towel every day and the blood ranged in colour, from pink - red - brown. Light bleeding is very common I hear. If its gets heavy and u get painful cramps, I wud see ur doctor asap hope this helps!

i got the same thing but with cramps

you need to contact your doctor.

Hey there. I'm 20 wks and this is alos my first pregnancy. Light spotting can happen a lot during pregnancy , and I believe its more common early on.
I know exactly what you mean by the nervous thing, I spotted a few times during my first trimester and spazzed every time. You should be fine , unless like you said you can fill a pad or have any pain or cramps. Then it's time to get to emerg. Or to your doctor.
Try to relax, the calmer you are , the clamer baby is and thats what will make you feel most at ease.
Good luck with everything !