My period came for two days on my period date,  I saw clots in toilet with bleeding and low bleeding on pad. I face very little cramp for few second. I took antibiotics this month for acidity and infection. I have done ultrasound in april which showed both ovaries are normal in size and texture.it shows some few follicular cysts. And impression is no other significant abnormality is detected. I took antibiotic 500 mg 4 tablets per day. Is it a reason for clotting. Last month, I didnt face this issue.