Need help and advice...

 I found out I have PCOS and I have been TTC for 3 years now and no luck , I went to the OBGYN dr and he told me he wouldn't help me TTC because I was to fat,, 😞 I haven't seen AF since May 7th I have had irregular periods since day one , bout 3 weeks ago I had a blood test done it was a bfn but now for the past 3-4 times I have had sex it fills weird and hurts and I have pain in my left side , could I be pregnant? ; should I test or what is wrong with.!!.