Extreme Cramping..HELP

Hey all..so been off my bc pill and ttc for past two months. Last month period came on time and was extra heavy but otherwise normal. I was scheduled to start my period two days ago. I’ve been extra bloated and the past few days had such extreme cramps that feel like knives ripping through my uterus and lower back. Spotted light pink this morning, then bled lightly a dark brown color, now in the evening have thrown clots. Just wondering if off timed bleeding and extreme cramps are normal for being off pill or a sign of something like ectopic pregnancy? Just a little concerned and in a lot of pain 😣