May be missed miscarriage. I had miscarriage at 11 weeks, but baby measured at 8 weeks. So the baby actually passed on at 8 weeks 3 days but stayed in my body for 3 weeks. You can go A&E. Explain to them, they will take your blood test HCG as baby probably too small to be seen. They will ask you come back 2 days later to take blood test HCG. If the numbers didn’t double, means most likely miscarriage. As I had similar experience as you at 4-5 weeks, but for me, my HCG did increase and managed to see fetus and heartbeat at 8 weeks.
Anonymous