miscarrage at 2-4 weeks?

for the past 3-4 weeks ive felt off my boyfriends condom broke and even though I've been on birth control for 5 months I feel as if I may have been pregnant. it was during my fertile window and I've experienced breast tenderness, and mood swings, and been super tired. well I was two days late and had extreme cramps and nauseous. I never took a test as I was waiting until my missed period. I've had a head ache and stomach ache the past two days the blood is darker with a few clumps smaller then a penny and super light and two days late. But the cramps I had were like labor I just had a baby 10 months ago. I in no way wanted another rn that's why we used protection. but has anyone ever had a miscarriage early and experienced this? I just feel so sick.