Pregnant and bleeding!

C • Married❤️ Boy Mom💙 currently expecting #2🤰🏻
Okay. So I am around 4 weeks and 5 days. This morning I woke up to a little bit of spotting in my underwear and it was a brownish/ burnt red color. It's been about 2 hours and now it's even lighter spotting and it's more of just a brown color. I don't really have painful cramps but I do feel uneasy(maybe because I'm nervous) and very light cramping off and on. What do you think it is? I know this could be bad but I really hope it's not. I'm scared. Should I go to the hospital? Is it impalntation bleeding?