Irregular periods and early ovulation???

ok i have really irregular periods and about 2 months ago i went to a women's health doctor because i have been trying to concieve since February with no luck but i was not having a period either. i was given medication to make me have a period and i did then after a week i had another period. the doctor said that my body was trying to regulate itself and that i should use the ovulation tests to track my ovulation and that it should happen between days 14 and 16 of my cycle. i took the tests but on day 12 of my cycle i left it too long but it said it was possitive. i dug an old one out of the trash and it never changed so i'm not sure if i ovulated but i do know that i did not ovulate between days 14 and 16 of my cycle! on top of this i have had thyroid and prolatin test done, prolactin was normal but thyroid was boarderline high, was told that it is not causing the issues with my period and not to worry it would be checked in 3 months again. i am also slightly annemic. at my last docotors visit they did bloodwork for A1C, FSH, and hemoglobin. what i want to know is with my cycles being so irregular and going so long with out a period if it is possible that i ovulate early? also what are these tests going to tell me? Please help.