Ectopic??

I really believe im having an ectopic pregnancy, im 6 weeks pregnant tomorrow. Ive known i was pregnant 2 weeks and its been hell. I spotted for 2 days near my expected period date, very minimal spotting, probably half a teaspoon..not even that. And then since then near enough every day ive had belly pains/discomfort. Ive had no other symptoms. And then tonight ive had lower felt abdomen pains feels much like strong period cramps. I also did a post earlier about having green and black poop with mucous. Right now im laid in bed and can feel like stabbing pains in my left side. Ive no bleeding or discharge changes. When i was pregnant before i didn't have cramps to this extent. Cant be happy as always thinking im loosing pregnancy. I want to be happy but finding it hard with all these thoughts