Hi thanks for your question.
Yes your right in saying that most probably your suffering from trombosis.The condition you have developed is called as thromobophilbitis that is inflammation of vein along with thrombus
formation.Thrombosed vein become cord like structure.Consultation with a physician is advisible who can get doppler study of vein done to confirm thrombosis
and patency of vein and may treat accordingly.Continue with baby aspirin
.Local application of heparin
ointment available as liotien gel and heat is advisible.
Hope this answers your question.