Feeling overwhelmed and anxious

Hi! Yes I had the herceptin in my thigh. Much quicker and easier than iv. It was 5ml in total at 1ml per minute. The first 1ml stung then it stung as they pulled the needle out. Leg ached for about 30mins after and for the next 2 days I had a 10cm red circle around the injection site (the circle is apparently rare as my nurses/dr hadnt seen it before but redness at the site is listed under side effects).
Good luck with treatment x