Yes if there is a line there it is positive. Just the heads up though I have had 5 confirmed pregnancies four were with very clear pos lines and one was a very faint pos line as you mentioned above, I got bloods done straight away and I was pregnant but started bleeding and miscarried at around 4-5 weeks, very early. It could also be a sign that you are early miscarrying. I have had two pregnancy losses. Now currently 12 weeks preg with my third child. All the best, go and get your bloods done and they may want to repeat in a week to check the levels are all good. Let me know how you go