its normal. pregnancy has many weird and unusual things happening, but spotting is a normal sign. A flow like period is not, which means misscarriage. But spotting is reserving the blood. Instead of having a normal period, or even when your egg is released, your still releaseing other eggs, but they just die since your bdy is occupied with another. So due to hism when it dies its blood is released into spottin on ur under garments
yes this is normal it happens sometimes throughout pregnancy when you should worry is it u are doing it alot or brownish green stringy fluid comes out give it a day or so and it should go away