Positive?

My boyfriend and I have been trying to conceive, I recently had my anxiety medication changed and have been feeling nauseous which is a side effect of the medications and so I took three tests, all of them were faint positives. I was told that some medications can cause false positives as well. But because my period is irregular, I’m not sure when exactly to take it to get a better result and I can’t get into my family doctor until next month. Do any of you have experience to help me know if it is just a true positive result or not? I’m very confused and really don’t want to keep buying tests!

Thank y’all 😊