HCG Level

I took a pregnancy test on Monday that came back with a very faint positive and I took it on day 12 of my period being late. I had taken 3 test prior and they had all been negative. I called my Dr and she had me go get a blood test. Well my HCG level is at 17. I have such a bad feeling that this is gonna end up being a miscarriage. The only symptom I have is my boobs feeling really full and my nipples hurt to touch. I am a ball of anxiety. I don’t want to get my hopes up just yet. I had blood drawn again today and pray that my HCG level goes up and I can go to have a sticky baby and healthy pregnancy. Has anyone else experienced anything like this?