Hi Genie- I can certainly understand your fears. The CDC and J&J are looking closely at these rare clotting episodes to see if they can be induced by the vaccine. I believe there were 4 or 5 women under 48 years old who had them

"events or thrombocytopenia in patients who have recently received the J&J COVID-19 vaccine, including severe headache, backache, new neurologic symptoms, severe abdominal pain, shortness of breath, leg swelling, petechiae (tiny red spots on the skin), or new or easy bruising. Obtain platelet counts and screen for evidence of immune thrombotic thrombocytopenia." Since I am not a medical doctor I can't explain the terms, but you can google them.

As always, if you have anything that changes with your health that is unusual call your doctor. Did you have J&J?