5 weeks pregnant and getting negative tests

I’m 5 weeks pregnant, I got a positive digital and normal test last week. I have symptoms such as sore boobs, my skin has broke out and won’t stop breaking out, cramps and serious nausea but no sickness . I went to my doctor yesterday to confirm pregnancy and she done a normal strip test, came back positive with a very faint line but she said there’s aren’t the best. I took three strip ones that they use in the hospital as my sister is a nurse and all three came back negative. I still feel pregnant and don’t have any bleeding or reduced symptoms does anyone know what could be going on I’m

So worried!