Help me girls

I've been taking the pill since March 14th (I have cysts on my ovaries) everyday at the same time, never missed one.

On June 11th I had protected and unprotected sex (he didn't cum) and also we used lube.

My anxiety made me buy a test 15 days after I had sex (4 days ago) and it came negative

Now I'm sick, I have flu, runny nose and sneezes 🤧 and tomorrow my period starts.

Some of you told me that flu was pregnancy symptom, I'm worried. I don't feel any other symptom, such as sore breasts, sickness or implantation bleeding.

Help me please!!!!!