Mama, I know na nakaka-alala yan lalo na if it's something new after you started your meds, kaya please check with your doctor or OB agad, hindi dapat maghintay, lalo na may infection ka pa. Blood clots during medication changes can mean something needs adjustment, and they'll want to see you ASAP para ma-assess ng maayos.
A few of us din nag-experience ng changes after antibiotics, pero ang bawat case talaga ay different, so your doctor lang ang makakasabi if normal lang yan sa iyo o need ng adjustment. Praying you get in today, mama!