What to Expect From Antenatal Care for Deep Vein Thrombosis in Pregnancy

A deep vein thrombosis is a clot in a deep vein, often in the leg. Pregnancy can change blood flow and clotting, so one-sided swelling, warmth, redness or calf pain needs prompt clinical assessment. A clinician may examine both legs and arrange imaging, commonly an ultrasound, rather than relying on symptoms alone.

If DVT is confirmed or strongly suspected, your maternity team may coordinate with a specialist to select an anticoagulant suitable for pregnancy. Care can include injections, review of kidney function and blood results, and planning around labour, birth and the weeks after delivery. Do not stop or change prescribed anticoagulation without medical advice.

Contact your maternity unit or urgent medical service immediately if you have symptoms that could indicate DVT. Bring your medicine list and tell the team about previous clots, bleeding, surgery, allergies or family clotting history. Take treatment exactly as prescribed and attend monitoring visits. Ask how to manage an injection site, what to do after a missed dose, and how your birth plan may be adjusted.

Call emergency services for sudden shortness of breath, chest pain, coughing blood, collapse or a racing heartbeat, as a clot can travel to the lungs. Seek urgent advice for heavy bleeding, black stools, vomiting blood, a severe headache or a fall with injury while taking an anticoagulant.

Ask which test is needed, when anticoagulation should start, and how long treatment is expected to continue. Confirm warning signs, injection instructions, pain-relief choices, and the plan for medication around labour, an epidural and after birth.