Afraid to go to the doctor

Tinna
So I had my period september 11th and it was for 5 days. Glow says I ovulated september 27th on a sunday. I BD on sunday and monday and monday evening i had pink spotting. My period was suposed to start oktober 12 but did not come and still hasnt. I got a very faint HPT 2 weeks ago but it was not fmp so I took another test morning after and it was negative. Still no period and still bfn :/ my lower back is killing me and my niples are sore and im realy tierd in the morning and in the afthernoon. Im afraid to go to the doctor and maybe get a negative results. What do you ladys think? Pregnant or bo?