Line eyes??

My last period was the 28th of June but I think I ovulated late on the 10th of this month I got what I think is a faint positive today the pictures taken in time frame the line is pink in person sorry pictures not great. My question is if its positive do I take my pregnancy dates from my last period even though I ovulated late. Any advice welcome. Also do I do another test tomorrow or is it 48 hours for line progression?