Possible to be pregnant?

So I had sex last Feb.9 with my BF and he used a condom (no tears/holes and didnt break) and now I have back ache, sore boobs and cramps, can this be pregnancy Symptoms or just PMS?

My Last period was Jan.30-Feb.3 and my cycle is 28-32 days. My next expected period is March 1 or 3

Thankyou in advance