What should I do?

Beth • Newlywed with 7 and 2 year old girls .. trying for #3
So I am currently approx 10dpo. I have got a few feint positives but none that have made me feel OMG. I'm so tired and cranky. Should I go to the hospital to get a blood test? I am on 4 medications that will harm a fetus, so I stopped taking them with the first feint positive.. But if I'm not, I really need to be on my medicine. Not sure what to do.