Period or Miscarriage?

I had sex 2 weeks ago and again 2 days ago. Not on the pill and unprotected.

I’m scheduled to get my period beginning of next week but just started a little.

My boobs have been hurting and been wanting to cry, gassy, the usual period symptoms.

But now I’m paranoid it could be a miscarriage. Any thoughts?

I took and it was negative but results may not be showing this soon.