Please Help: Side Effects or Pregnacy

Brittany

So I have previously been taking Trinessa but pharmacist switched me to Tri sprintec which is just another generic brand. And now I’m experiencing side effects that I was not experiencing before on Trinessa.

However...

Saturday - active pills ended (did not start new pack)

Sunday- had sex and started my new pack

Tuesday- started noticed breast tenderness and some constipation

*its been a week and these things haven’t left.

As any one experienced side effects from switching their birth control? Or is it because I didn’t start my pack right and could potentially be pregnant. Please help.